Just seen elsewhere that apparently LunarPages disallow use of vBulletins on their servers. More specifically, they claim they've had problems with heavily modded vBulletins with high activity hogging resources.
The consternation of the vBulletin community can be found ehre:
http://www.vbulletin.com/forum/showthread.php?t=98562 The position of Lunar Pages is here:
http://www.lunarforums.com/forum/viewtopic.php?t=13186 Firstly, overselling is a fact of the webhosting industry, in that consumbers demand lower prices without worrying about what corners might be cut for them. The degree (or not) of overselling is almost certainly reflected in the price - the mantra of the webhosting industry is that you get what you pay for.
The second is that some people don't seem to realise that there comes a point when you have to look to move from shared hosting. Some of the vB owners seem entirely oblivious to the needs of their forums. If webmasters are to be responsible with their forums they need to learn when to move to semi and then fully dedicated to maintain their sites.
Thoughts?