This has been happening long enough that we should be able to ddocument patternss.
Heck yeah.
The difference between that forum and this one, your ip addy showed up under your posts.
That made it leaps and bounds easier on us, especially since we were unmoderated.
The mods here have access to the IP addy info.
Eventually, like a high stakes card game, they will have a royal flush while our troll thinks he's playing go fish.
Couple of posting patterns have been mentioned:
Time of day for the posts
Specific Freepers
Good knowledge of specific freepers
Good knowledge of FR