Most Web 2.0 businesses have an advertising revenue model. This is a mistake and a big one. A lot of web 2.0 start ups are selling advertising to each other – its a kind of 21st century Ponzi scheme.
Having only one form of revenue in a business is a trap. You must have multiple income streams if you want any business to survive and thrive. Micro Persuasion: Advertisers, Only You Can Save Web 2.0
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