Say you want to leave or get banned, who owns the all the posts that you have made ?.
From the current TOS (although it was in the previous version too):
By submitting content to LPSG, you grant us an irrevocable, non-exclusive license to display the content.
I'm the one who lobbied to get that sentence into the TOS. I'm no longer on the administrative staff here, but these were the concerns that led me to write that sentence:
Once you post something on LPSG, it also gets archived by Google, by the Internet Wayback Machine, and possibly other outfits. LPSG doesn't have the ability to 'yank posts back' from these places. They have the
ability to delete them here, but the threads in which they appeared in would become disjointed and harder for other members to enjoy.
The word 'irrevocable' protects LPSG in that after you leave LPSG, you can't force LPSG to remove the content (words and pictures) you created here. The word 'non-exclusive' protects
you in that you retain the ownership of the content and can take it somewhere else if you want -- LPSG can't, for example, sue you for copyright infringement because you reposted something on Facebook that originally appeared here.
You own everything you create here, but you waive the right to force LPSG to remove it. (As a matter of practice, moderators have removed upon request things that are not part of the discussion board threads, like gallery pictures and blog entries, though they're not required to.)