For instance, if you were in fact Dollypop, as some have speculated. One of the main clues for your indictment would be your computer's IP address.
If you're not technically inclined, you can read this paragraph, if you are, skip:
When you connect to the Internet, your computer is assigned an IP address... it's much like a street address. It tells every other computer where to find you. But don't worry, it's next to impossible to figure out a 'physical location' from it. Just a location in cyberspace.
Assuming your Internet provider has a limited range of IPs to assign, you would surely show up as living on the same "cyber-block" as another poster, if not at the same address if you don't manually switch your IP address.
So, if you were to log on as Dollypop, make a post... then log out. Immediately log on as DAME and make another post in reply, then you would probably be caught by the beauty of technology and booted. (Assuming they log your IP)
Hamlet's father.