I have so far successfully avoided Facebook, Myspace, and Twitter (except for one day when I got some giggles off of a Twitterer called shitmydadsays). Not having seen the need, and lacking the desire, to sign up for them, I'm still ignorant of what their allure might be.
I've seen quite a few retailers, large and small, promoting their pages at the various sites, and that got me to wondering: Does anyone use any of these, or any similar sites, in any hobby-related capacity? If so, how? If not, and, if you're famialir with the sites, do you have any brainstorming ideas?