Drupal Tough Love #2: Signatures for Forums 5.x-2.3

Over at Drupal Tough Love, chx and I just reviewed Signatures for Forums 5.x-2.3 which "provides user signatures that will be familiar to users of popular forum software" such as "the administrator can choose the input filter for signatures", conditional signatures that are hidden "if a post is under a particular length", and showing the signature only once per conversation.