New features aside, the forums should really be upgraded for security reasons alone. Security flaws are found in software all the time (especially something as big as VBulletin). If we stick on an older version of vBulletin, the forums are more vulnerable to attacks as no patches are going to be made. Stuff like data loss or leaking of personal information is more likely to occur as a result. Depending on how the backend works for both the forum and the shop, flaws could be found in the forum code that could open the actual shop site to hackers as well. Can't imagine that it's really worth the risk to be honest especially for a big shop like Overclockers!