WOW . . . so many stupid questions in one thread.
SERIOUSLY guys do you think that if you are posting guns for sale that there are not people watching?
A question about being subpoenaed for information??? OMG, its all public information, WTF would they need a subpoena for? To read what you posted publicly???
Hmm, maybe a subpoena would be needed to obtain IP address associated with a specific account that made a post . It's not the content of the message, it's the ability to tie that content to an individual.
Did you think the questions were JUST about public content?