I started using Mollom to cut down on our spam. It's currently monitoring nearly every text entry field on the web site!
Moderation and manually approving new users is catching most of the spam, but it's very time consuming to investigate each new user account. Technology to the rescue! I hope...
If it thinks you might be posting spam, it will ask you to complete a captcha – a type the letters that appear in the box type thing.
If it fails to catch a piece of spam and you notice it, feel free to click the "Report to Mollom" link under the piece of content and it'll get flagged.
Let me know if you run in to any trouble posting or experience any other weirdness on the site.
Thank you, gentlemen!