Facebook introduces editing of comments

Facebook is finally allowing its users to edit their comments. This was a feature users had longed for a long time as often when we had to rephrase a comment or just rectify a typo, we had to delete the comment and rewrite it all over again. Well, now Facebook has rectified it, as now users have the ability to edit their comments. So, gone are the days of the inadvertent typo.
Facebook will additionally be showing the editing history for a comment so that subsequent commenters or likers have the full context of the conversation. Now we are waiting for the day when it implements the unlike button.