Some of the more common signatures by the spammers here appear to be:
Of course I'm not suggesting that all the people with those signatures are here to spam. But I do think there are things that can be done. This topic for phpBB: Preventing Spam in phpBB3. Or more specifically, the Q&A CAPTCHA seems to work best at the moment.OpenOffice 3.1
OpenOffice 3.1 on Windows Vista
OpenOffice 3.1 on Windows 7
Of course I don't wish to downplay the efforts by volunteers here! This board is a great resource for OOo/LO support, and the volunteers spend a lot of time online. I just wanted to make the suggestion.