Here’s one party’s list of which ones the top 100 are for 2007, thanks to Scott for pointing it out:

 Top Web Apps and Sites for 2007

I’ve been very resistant to the whole concept of “social marketing,” and Web 2.0 but it’s started to become more interesting lately, overcoming a persistent stubborn streak.  I think it might be the thought of having to deal with blog comments (spam)  that’s made it seem distateful.