Thanks for the help on the UA list.
When I tested the 2nd UA I listed above with your UA test website
http://www.botsvsbrowsers.com/SimulateUserAgent.asp I see our forum but I also see a "Request Status: 500 : Internal Server Error" at the top. Is that caused by our US block list or is that a server setting issue I need to talk to our webhost about? I also get a "500 : Internal Server Error" when trying to verify we have our Comscore analytic code (like Google Analytics) inserted on the forum.
What is the status of the spiders Majestics MJ12bot Spider, Speedy Spider and Voila Spider? I've searched them and get info that is dated or conflicting on if they are good or bad. They are hitting our site pretty often.
The page 5 weirdness of this thread you're seeing appears to be okay on my end.