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Izea, the controversial company formerly called Pay Per Post, is well-known for paying bloggers to post articles about products. These "sponsored conversations" have had big-name advertisers like K-Mart and Sears funding the campaigns as well as big-name bloggers like Chris Brogan and Julia Roy writing paid articles. Despite the fact that many participants fully disclose their involvement when writing a sponsored post, Izea still has quite a few critics thanks to the bloggers who do not.

Now those critics will have something else to get up-in-arms about: Izea is planning a launch of a new ad platform called "Sponsored Tweets." And just like it sounds, this new spinoff will pay people to tweet.

Are any application developers making money on Facebook? Not really, but they could be. According to Bruce Richardson of AMR Research, less than 2% of Facebook developers make any "real" money. Part of the problem is that Facebook has not had any decent e-commerce engine for monetizing applications - until now, that is. Instead, developers have had to rely on the advertising model, which isn't always a good fit for their type of application, nor is it all that effective. Z-Commerce, a new service launching today at DEMO 09, aims to address this problem. But the big question is this: are there any Facebook applications worth paying for?