URL and email links were removed as an option from signatures as they were redundant.... and quite frankly having a tendency to be abused. Both are easily available in a user's profile, all the reader has to do is click on the poster's user ID an the poster's profile pops right up. All other UBB code should still function... if not, we've got some tweaking to do.
It has been suggested that we get icons at the bottom of the posts for URL's and emails as we had on the older version of software, that is a pretty good suggestion, and one we'll be looking at.
Hope this explains things. If you have any questions, feel free to drop me an email.