No you don't. If you were paying at all attention to the context of the post, he was listing sites were are successful but who's ideas had already been implemented. Facebook may not be as successful as Google, but it needn't be, and your assumption that your comment is in any way relevant to the discussion suggests a severe lack critical thinking skills.

who determines what is relevant? This is democracy and i αν allowed to comment any aspect i want. get a life and learn the basics of respect when you grow up

I would guess that fb's market share is close to google's and youtube, or at least will be soon based on current growth patterns. I may be wrong.

You're wrong now. FB's market share is almost certainly below 50%. They're a tad larger than MySpace, and there's also Hi5, Bebo, Orkut, Ning, Friendster, etc.

And their market share in the developed world isn't even in first place, and they're not even growing significantly faster than MySpace there.

Also, Google makes more per pageview by far than their 2nd place competitor, Facebook makes substantially less than MySpace. If anything in the social networking wars, MySpace is Google.