We just rolled out our new spam changes for track 11 beta to our server here, and we're going to see how it goes. We're using several different methods to detect spam including honeypots, calculated server side fields, form timers and some others.
Feedback on this is welcome, but please use the Track 11 beta category so the right team sees it.
Grady Werner
SmarterTools Inc.
www.smartertools.com