Insight into the autonomous thought routines used when scan browsing the fora...
The moment an A2000/A2500 is mentioned, the suspicious poster exception vector is taken and the poster/post is subconciously interrogated for any possible connection with previous incarnations of doomy. A positive hit is stored in the "ignore or ridicule" cache, depending on the mood state...
Worked example:
In this instance the handle "RottyDude" was enough to link him to BoingBoss, who had a picture of a Rottweiler puppy as his avatar for some time.