Currently we have a vBulletin 3.8.x board, and I am concerned that vB will stop creating security updates for that series. I don't like the idea of spending $200 on a license just for the possibility of a security update in the future (they cut you off if you don't have a current license), and I have no intention of going to 4.x or 5.x. Things on my mind as I contemplate XenForo. I would appreciate any comments on them. #2 and #7 are key. We have a lot of custom code. It is important to us that XenForo be easy to modify and have a good developer culture. We have a large archive (millions of posts) that I want to have online, but has in part been taken offline because of load (memory, speed) issues. Does XenForo include or have add-ons that enable a separate archive post table in the DB, or something similar that would allow a board to be snappy for regular use but also give access to archive posts? It has to be easy for use to introduce custom BBCode that is more complicated than just a text translation into html (i.e. process information, modify the output, then spit out something completely different in a username and usergroup dependent way). No problem? Does XenForo interact well with mod_fcgid? How does XenForo do so far with respect to new versions not breaking old code? Does XenForo store plugins, etc in flat files for simple version control during development? We have a number of folks who have purchased memberships with the board using vB's Paypal integration. Does XenForo have a comparable system? What have others done? Has it been possible to go forward without breaking existing recurring memberships? What happens to existing links? Do they break? Does the translation script make some kind of redirect map? What is the consensus on the built-in SEO (if any) or that provided by popular plugins? I'd love to see a bunch of XF sites that have a modern look that people enjoy using. Is there something like that compiled here? Can you suggest a site or sites to look at? Related to #10, have people found it easy to integrate web site style with things like blogs, wikis, etc, and which software did XenForo play best with? Thanks!