Which Version of VBulletin to Use?

[Lynne]

You can find the announcements for the different versions here - vBulletin Announcements Check the announcements for 3.7 and 3.8 to see the major changes since 3.6 (the inbetween versions are usually bug fixes, or security patches, not really added features).

Many mods for 3.6 or 3.7 will work for 3.8. Usually, if you read the pages in the modification thread since the last version upgrade (January is when 3.8 came out), you will see someone ask "does this work for 3.8?" and usually someone will answer.