It doesn't happen very often-- once every month or two-- but every now and then I get an apparent robot coming in via the WebmasterWorld profile.
Q: Anything to do about it?
I don't perfectly understand how a robot can even see a profile link in the first place; isn't the "website" line constrained to human members with some number of posts under their belt?
I can't complain too loudly, because in the course of looking into the most recent one, I discovered I'd been doing something that's unfriendly to one subset of human visitors. Trala. Now fixed.