What happens if you have attrition in your customer base over time. An easy way to extend the model to take this into consideration would be to add a variable to model Attrition Rate as a percentage of the entire installed base at each cycle, and simply subract this from the total population at each cycle. This topic is nicely covered in this blog post by Andrew Chen: Is your website a leaky bucket? 4 scenarios for user retention.

Index funds provide you with a way to invest in the stock market that is completely passive. For example, if you invest money in an index fund that is based on the S&P 500 Index, you will be invested in the general market, without having to concern yourself with choosing investments, rebalancing your portfolio, or knowing when to sell or buy individual companies. All that will be handled by the fund which will base the fund portfolio on the makeup of the underlying index.

Humor: Old Spice’s viral video marketing campaign used humor to great effect. They had to. After all, there aren’t many other interesting ways to promote a deodorant / body wash. But they did it with a knowing smirk. The brand didn’t mind poking fun at itself. And it worked. The usage of humor introduced the brand to a younger, Internet-savvy audience.
There are three main categories of income: active income, passive income and portfolio income. Passive income has been a relatively loosely used term in recent years. Colloquially, it’s been used to define money being earned regularly with little or no effort on the part of the person receiving it. Popular types of passive income include real estate, peer-to-peer (P2P) lending and dividend stocks. Proponents of earning passive income tend to be boosters of a work-from-home and be-your-own-boss professional lifestyle. The type of earnings people usually associate with this are gains on stocks, interest, retirement pay, lottery winnings, online work and capital gains. 

If you offered Prismacolor pencils in your online store, you have the option of promoting the GIF through your own social channels in an attempt to get engagement from your own audience using a piece of content that is proven to be viral with general audiences. Depending on the creator of the content, you may be able to upload the content to your channels directly to share or you may need to re-share the content from the creator’s original social post, YouTube channel, website, or other direct link. Your post (or re-share) would include a link to Prismacolor pencils for sale in your online store.
Build an investment portfolio that pays out dividends (Stocks / Bonds / Mutual Funds). Dividends are payouts that companies give to their investors as a portion of their earnings. They’re often paid out quarterly. If you’ve already got an investment portfolio, it’s time to take a good look at which stocks, bonds, or mutual funds you own. You’ll see consistent returns from the ones that pay dividends. This is a fantastic way to earn passive income. Invest once and watch the returns pile up.
No doubt that harnessing influencers would be a lucrative business for both companies and influencers.[54] The concept of 'influencer' is no longer just an 'expert' but also anyone who delivers and influence on the credibility of a message (e.g. blogger)[49] In 2014, BritMums, network sharing family's daily life, had 6,000 bloggers and 11,300 views per month on average[55][56] and became endorsers for some particular brand such as Coca-Cola, Morrison. Another case, Aimee Song who had over 3.6m followers on the Instagram page and became Laura Mercier's social media influencers, gaining $500,000 monthly.[55]
For example, you might take photos and have them available for a fee at sites such as shutterstock.com or istockphoto.com. Similarly, you can create and upload designs at sites such as zazzle.com and cafepress.com, where people can buy them imprinted on shirts, mugs, and so on. Similarly, if you write an e-book (which can be as short as 6,000 or so words), you might find that people are interested in buying it, perhaps via Amazon.com's direct publishing service.
The expansion of various social networks, such as Facebook, Instagram, and Snapchat, has contributed to the effectiveness of viral marketing. As users grow, and as the time they spend on social media sites exceeds their time spent emailing, more users are viewing news and forwarding it through their preferred social networks. This requires marketing campaigns to shift focus from more traditional email campaigns to more creative social campaigns.
This is an ideal strategy if you live in an area where real estate prices are too high to realistically invest in, or you don’t want the hassle and expense of traveling all over the country visiting potential properties. Plus, if you are new to single-family real estate investing, letting a place like Roofstock guide you through the process is a great way to get your feet wet.
Passive income differs from active income which is defined as any earned income including all the taxable income and wages the earner get from working. Linear active income refers to one constantly needed to stay active to maintain the stream of income, and once an individual chooses to stop working the income will also stop, examples of active income include wages, self-employment income, material participation in an s corp, or a partnership.[4] portfolio income is derived from investments and includes capital gains, interest, dividends, and royalties.[5]
A company called StreetShares helps mostly veteran small business owners (also some non-veteran owned) acquire capital for their business cash flow needs by providing loans. What’s really cool is that these loans are funded by investors. For a $25 minimum investment, all U.S.-based investors can earn a flat yield of 5% on their money by investing in StreetShares Veteran Business Bonds.
Blooom: Blooom works very differently from many of the other robo-advisors. It helps specifically with your employer-sponsored accounts (401k, 403b, 401a, and 457 accounts). Blooom will go through all the investment choices and make adjustments for you. The service also automatically rebalances the account as it grows. Blooom is very inexpensive when compared to a traditional advisor at only $10 per month no matter how large your 401k grows.
You must sacrifice the pleasures of today for the freedom you will earn tomorrow. In my 20s, I shared a studio with my best friend from high school and drove beater cars worth less than 10% of my annual gross income. I'd stay until after 7:30 p.m. at work in order to eat the free cafeteria food. International vacations were replaced with staycations since work already sent me overseas two to four times a year. Clothes were bought at thrift shops, of course.
You’ve probably heard of affiliate marketing before – it’s when you earn a commission by promoting a product. The product you promote online should be something you’re knowledgeable about and that you believe is high quality. Common sense, right? You’d be surprised by how many affiliate marketers forget that principle, but that’s a whole other story.
Who doesn’t like some down and dirty affiliate fees?!  Especially if you realize it can be even easier to make money this way than with an ebook.  After all, you simply need to concentrate on pumping out some content for your own site and getting the traffic in, often via Google or social media.  Unsurprisingly, most people can enjoy their first affiliate sale within 30 days of starting a blog.  Continue reading >
Where blogging requires frequent, less-lengthy content, a book can be something you work on for months at a time and publish it for sale. And it can become more than just passive income. In fact, UK author Mark Dawson makes close to half a million dollars a year from self-publishing his books. On a smaller scale, Joseph Hogue makes about $2,000 per month writing and self-publishing financial books. If these guys can do it, anyone can.
Betterment – Betterment was the first robo-advisor to launch, almost ten years ago. They’ve automated the entire investing process, so all you have to do is watch your portfolio of assets grow (over the long run, of course). They do charge a .25% annual fee of your account total, so if you’ve got $100,000 that’s being managed by Betterment, you’ll pay just over $20 per month.
​I’ve been into home décor lately and I had to turn to Etsy to find exactly what I wanted. I ended up purchasing digital files of the artwork I wanted printed out! The seller had made a bunch of wall art, digitized, and listed it on Etsy for instant download. There are other popular digital files on Etsy as well such as monthly planners. If you’re into graphic design this could be an amazing passive income idea for you.

It isn’t easy to create a YouTube channel that is popular. If you’re not a funny person, don’t try to upload wacky videos – it won’t work. But you might find traction uploading quality how-to guides in your field. Because there is so much traffic, no field is too small. Creating videos on YouTube is also a really good way to add quality to your blog or website.
There are many ways to “go viral” from a marketing perspective. There are no viral marketing techniques which work for all industries so a tailored approach which includes one or more viral marketing channels is important. Videos are the most popular way, but social media posts, search engine result pages (SERPs), email marketing campaigns and even TV advertisements have created viral, trending content for company, either on purpose or accidently. There are many different types of viral marketing, but they can be lumped into three categories – content created by a business about their products, content created by others about a business’s products, and content that businesses pay influencers to create about their products through advertising and sponsorship. Below we talk about these types of viral marketing to highlight the variety of strategies you could have.
Bob Gerstley was among the first to write about algorithms designed to identify people with high "social networking potential."[17] Gerstley employed SNP algorithms in quantitative marketing research. In 2004, the concept of the alpha user was coined to indicate that it had now become possible to identify the focal members of any viral campaign, the "hubs" who were most influential. Alpha users could be targeted for advertising purposes most accurately in mobile phone networks, due to their personal nature.[citation needed]
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