IanCP - 9:45 pm on Aug 13, 2012 (gmt 0)
Infinitely cheaper to remove content and then turn off comments than having full time corporate lawyers monitoring everything.
Further, some of these corporate FB pages simply gave their consumers a free kick to complain about service or lack thereof. Some funny stories there where it blew up in their corporate faces and gave the media a field day laughing at them.
On balance, I can't see why any company would bother.
The huge list of negatives far outweighs any tiny possible PR gain.