Yes, the TalkBoard based upon input from the members of flyerTalk and their own initiative recently voted to re-introduce signatures as a member benefit. I was not actually involved in the process and the entire credit goes to the elected TalkBoard.
Signatures will be re-introduced once we can draft general guidelines for them which might be as soon as today. They were previously pulled when a growing number of members used them to flame other members and with the looming general elections in the U.S. could not find a reasonable way to police these types of actions. Times and staffing because of the volunteer efforts of our moderators make this now possible.
As a member of FlyerTalk, I'd like to thank the TalkBoard for their actions and vote to restore this member benefit.