I forget how Bogley is setup, but when you first register is it by a captcha or like a two-word captcha?
If it is, then that explains the influx of spam...
If we can change the captcha to something to a question, such as "what outdoor forum am I on?" and the answer is "bogley", becahse I have read on the vbulletin forums, that this new method is a HUGE improvement over the captchas.
Make sense? It's worth a shot at least, or a trial run for a month or something.