Pidgin (ICQ) How do I block Spam?

[paradigm2]

I use ICQ over Pidgin. I have to leave my settings open enough so that someone can at least request authorization to speak with me because I do business with a pool of 10,000 people who might potentially contact me. However every day I get ten messages from people I don't know spamming me. In 99% of cases all the messages have non-English character sets. Does anyone know of a way to block this kind of spam? Perhaps just some way to block any message which contains non-English characters from people not oen my buddy list would be a good compromise as well. Thanks in advance!

[paradigm2]

Just bumping this. Someone must know of an up to date solution?

[akraievoy]

This thread may contain some other helpful info
http://ubuntuforums.org/showthread.php?p=10494852
--- CROSS-POSTED ---
Well bot sentry is quite old and there's no deb on the sf site. Maybe privacy please is a better option. The links to both go below:

http://sourceforge.net/projects/pidgin-bs/
http://code.google.com/p/pidgin-privacy-please/