Facebook has long betrayed you by forwarding your drunken wall ramblings in an email for posterity. Previously, though, the only way to limit further public shame was to try to delete the comment altogether. Now, it looks like the loose fingered have been given a reprieve, as the social giant is rolling out the ability to edit your ill-thought missives long after the fact. Even better, this seems to extend back to those written in the past. Don't think you can be sneaky though, as an "edited" link will appear below, letting everyone see the thread history. So even if you change your opinion, that indecision remains for all to see.