Hi Miss Snark,
I recently started subscribing to Publisher's Marketplace and noted a lot of writers have their own pages. They are all, of course, seeking agents. This is probably a silly question, but do agents actually look at this stuff? I would assume you couldn't possibly have the time nor the need to search for clients this way.
I don't look for clients that way but if I happen to google you cause you queried me, your Pub Mkt page comes up and I'll go look at it.
I do know however that people DO search these pages and the offerings page cause I've gotten calls from editors myself.