That's how we caught a double alias on the SIRG board - found 11 words that the guy mis-spelled using both IDs. But the final evidence was they both posted sirgE while SIRG had an E. Now what are the odds of that? Plus they would "ping" off each other's posts.

And that guy has already joined IH twice, the last time he got one post in before IH ADMIN have him the boot.