Speaking of Mad Men during the third season of Mad Men they worked to create buzz through an application called Mad Men Yourself.  The application as an avatar creator that helped you to create an avatar that made a 60s stylized version of yourself.  The site received over half a million visitors the first week.   After five years you can still use the application, and it's going strong.
On paper, it may seem easy to invest in real estate and earn the rent as passive income, but in a practical sense, it is often difficult to translate this investment into income. Identifying the source which will generate a stable passive income is probably the biggest challenge you might face. You may require external help. Most activities that generate passive income, like starting a blog or selling items on Craigslist or eBay, can end up taking so much time that they aren’t really “passive” activities anymore.
Etsy now allows you to sell digital products in your store. This can be anything from a picture that someone can download and frame to a guide on how to create a budget in PDF form. The possibilities for you to be creative are endless. The nice thing is, once you create a digital product for Etsy, you upload it and you can sit back and watch the sales come in (assuming your digital product is awesome).
7) Never Withdraw From Your Financial Nut. The biggest downfall I see from people looking to build passive income is that they withdraw from their financial nut too soon. There’s somehow always an emergency which eats away at the positive effects of compounding returns. Make sure your money is invested and not just sitting in your savings account. The harder to access your money, the better. Make it your mission to always contribute X amount every month and consistently increase the savings amount by a percentage or several until it hurts. Pause for a month or two and then keep going. You’ll be amazed how much you can save. You just won’t know because you’ve likely never tested savings limits to the max.

Determine who your target audience is in the earliest stages of your campaign creation. To achieve this, ask questions such as: Who do I want to connect with? What content would they feel passionate about? What are their hopes, dreams, and values? Why would they care about my campaign? What will can I do to make them want to share my content with their social network?
When I purchase an existing online business, I look for cash flow over the past year and where the money comes from. I want the sources to be more passive so that it does not take a lot of my time. Also, typically I will make an offer that is 18 – 24 months of profit so that I know that I will get my money back within the next two years. I hope that helps!

The term viral strategy was first used in marketing in 1995, in a pre-digital marketing era, by a strategy team at Chiat/Day advertising in LA (now TBWA LA) for the launch of the first PlayStation for Sony Computer Entertainment. Born from a need to combat huge target cynicism the insight was that people reject things pushed at them but seek out things that elude them. Chiat/Day created a 'stealth' campaign to go after influencers/opinion leaders, using street teams for the first time in brand marketing and layered an intricate omni-channel web of info and intrigue. Insiders picked up on it and spread the word. Within 6 months PlayStation was number one in its category—Sony's most successful launch in history.