XD. Oh my gosh, that was cruel and hilarious at the same time@Asmo
Well, personally, I use Facebook to contact people I otherwise wouldn't talk to on a regular basis (like my friends that I used to go to middle school with but don't go to high school with). However, I hardly spend any time on Facebook or MySpace since I text them and e-mail them instead. However, I like blogs. I tend to use them for streams of thought (sort of like an activity that I used to do in my sixth grade class in which we would write whatever we could for five minutes without stopping).
What Orion said. I also use facebook for getting in touch with people whom I've lost contact over the years (like my cousins, or whoever in the family). And facebook has fun little games that are major time wasters. I don't know, I like 'em.
Well for me anyway, keeping track of the people I meet throughout my career is kinda... impossible through conventional means. This due in fact to how many of them there are and that they get scattered to the four winds to various duty stations across the world. So the only way to keep track of the friends I've made is through Facebook. Sure, eventually friendships wilt a little from time and distance, but I'd be curious to see what happens when I try looking them up in a few years.