Mathew Ingram points out that the Facebook Platform is, in fact, a platform - it's certainly enabling third parties to thrive in its ecosystem:

The next time I wrote about it the feature had more than two million users. Pretty amazing, right? Well, according to the company’s blog, it now has over six million users. That’s about 3,000 times more than it had a couple of weeks ago, and the application is adding about 300,000 users a day -- a rate of growth that is unlike almost any new application I can think of. In a chart at the iLike blog , the company compares its growth to Skype, Hotmail and ICQ, and I think those are probably pretty good comparisons. The big question, of course, is whether all of the people who have added the app to their Facebook profile will become regular users of iLike, and actually bring the company any revenues as the result of its stardom.

That level of growth is astonishing - with the caveat being, of course, that the proof will be in the revenue numbers. Still - no one is sneezing at that kind of viral adoption. There are plenty of people (myself included) who have mostly ignored the social application space, but that's looking more and more like a huge omission.

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