What would be really interesting to see going forward is a forum with cryptographic signing built into the to the base functionality of a forum. This would give both the poster, and the readers, a way to verify the integrity of the message. The downside (but not really) is that editing would be more difficult, but I could live without an edit function. Maybe that would force a little more thought before hitting the submit button, like it does here on /. A bigger issue might be the loss of anonymity that would come along with that, but you are already not anonymous to a state level actor and probably a few multinational corporate entities.