One of the most ironic spam stories we have seen to date was reported yesterday at Wired. For at least six months, botnet infected computers at Pfizer have spewed out a steady stream of Viagra spam. The infection has taken it's toll on Pfizers internet reputation, as researchers are reporting that approximately 138 Pfizer IP Addresses have been blacklisted so far.
Update: As of Feb, 5th 2009 the MxToolBox Forums have moved to http://community.mxtoolbox.com/forums