I think I mentioned trying TwitBlock.org, a website that scans your Twitter followers and ranks them for “spamminess.” Higher the score, more likely to be spam. Looks at things like how many people you foll0w, how many times you’ve tweeted, and so forth. It’s not perfect but it’s better than nothing. And my rule of thumb is, “When in doubt… block.”
I’ve heard from one acquaintance who wanted to know why I blocked him. I unblocked and the pot’s right now. But there are sure to be more. Just ping me.