The signatures and the Avatars were turned off in the forums to try and lessen the load on the old server. However, what we found when we looked at it was that the Avatars alone were using approximately 20% of the bandwidth on the site and signatures were way up there as well - and we use a LOT of bandwidth. We also got many positive comments from people after the signatures were turned off by default that the forums were much easier to read. We'd always asked that people only post their signature the first time they post to a thread but it didn't happen. If you click on profile at the bottom of someones message you will get all of the information on the individual. The avatar was always visible on that page but the signature was not. I recently modified the software to display the signature on that screen as well so now you can just click on profile at the bottom of someones message and see their signature if they didn't post it. I'm also looking into ways to limit the signature length (isn't possible right now) and we may move the current signatures to a seperate field and then limit the signatures to a pretty short one (100 characters or so) that you could put basic information in and then if someone wanted to see more they could go to your profile. If we do that then we'll turn the signatures back on by default.
-TDR Webmaster