I have just finished adding
reCAPTCHAs to the "Contact Us" form at the bottom of the main site page, and the Send Message page. The reCAPTCHA will only show on the Send Message page to people who are
not logged in, though, as I really don't think we have a problem with spam from registered users.
Hopefully this will clear up the spam problem that we've had recently. If issues persist, please let us know in this thread.
Update (2007-10-15): I've since added a CAPTCHA bypass code which you can add to your own contact forms if you're using such a form. If this code is POSTed to our server and matches the one we have stored for your account, no CAPTCHA challenge will be presented to the sender. If, however, that bypass code isn't present and the sender isn't logged into Web2Messenger, they will be asked to complete a reCAPTCHA challenge. When they successfully do so, the message will be sent as normal and they will be returned to your site. More information is available
in our FAQs.