Do you think facebook.com is the most popular social networking site?

Well, I think this should depend on what country you live in. Because every country has it's own social networking sites, and I think get along with similar people is much more easier than make friends with culture gaps. In US, facebook must be the most popular one, but in other country, may be it is not

i think facebook is the most popular social network around.it has everything myspace had but more professional. twitter doesn't offer much to the world but with facebook people can connect and even look for jobs. but like myspace, something msay become big enough to knock off facebook.

I guess it is the most popular one, twitter is following so close though. But i always prefer to check my facebook account i don't like twitter at all. It has nothing to do with being social!

to me no i don't like facebook or twitter i still like mypace.

Yes I do, it has definitely surpassed Myspace by a lot at this point. I only really use facebook to connect with my friends online, not any other sites. I'm not 100% sure though that it is the biggest but it probably is. Twitter might be catching up with it a little bit though! And then myLot of course.. haha, maybe someday myLot will be more social orientated. Could be a future big move for myLot.