It seems to be having a growth spurt. Every time I check my mail, there are a dozen “XXX is following you” messages. My algorithm is, I bring up their Twitter page and give it one glance and make a follow/no-follow decision in about 0.5 seconds. Which probably means there are interesting people I’m not following because they weren’t interesting in that half-second. And I have more followers than followees, which probably makes me an egotistical bastard. Oh well. I think Twitter is here to stay.