I'm very happy to see some of the early posts show up in the searches!
Using Firefox - when browsing a multi-page thread, selecting the "next" page at the bottom of the page fetches the next page, but does not bring page focus back to the top of the next page, so you have to manually scroll to the top. Not a deal breaker, but IMHO not really the expected behavior.
The archived posts occasionally have links which refer to other archived posts - those links are of course now broken. With the understanding that the archived threads were possibly imported in a manner which will not make re-indexing these dead links possible, it would be a nice fix if you could somehow recreate the correct thread reference, or a way to look them up.
Pictures included with some of the old threads are sometimes still archived on Google Images. If you no longer have them in storage, I wonder if there would be a way to insert a google search window to cause it to be located, based on how it was referenced when Google first crawled it.
Keep up the excellent work!