Trillian and IM Spam

Something has happened this week that has sky rocketed the amount of instant messenger spam I've been getting. I've got a constant stream of this crap now. To combat this, I've had to block all but known contacts. It took me a few minutes to figure out how to do this on Trillian:

1. Fire up all connections
2. Right click on the connection status light
3. Select Connection Preferences
4. Click the Privacy tab
5. Adjust as needed