As I noted on the post update, I thought that I’d come up with a clever way to eliminate a lot of these nonsense-domain spams, by blocking the letter “q” followed by anything other than a “u,” “a,” or a period, comma or space (so we could still write “Iraq”). Here’s now I implemented it: q[ua\ \.\,]

Unfortunately, in testing it, I get a large number of false positives (about 25%) When I see the comments flagged by the new filter, I don’t even see a “q” in the comment. What’s the problem?