Web 2.0 Startup Ideas - $1000 Reward

Hi, Am looking for web 2.0 startup ideas, The ideas must be B2C i.e Business to consumer Some of the examples of business to consumer include twitter, ebay etc.. where customer engages and shops In short something where customer can engage immediately without complex integrations. The idea must be unique,should have a market and must have a revenue model Things to avoid: Ebooks, training courses, adult porn, gambling or MLM Submit all ideas using PMB, The best ideas will get $1000 + development fees additional You should submit the idea in a proper form and must be able to answer more questions about the business Bring the best ideas