What type of value-added services do you offer, if at all? Database hosting is pretty much a given these days, but what about forums, calendars, phpnuke, mailing lists, greymatter, etc...

Erik

what about forums, calendars, phpnuke, mailing lists,

All of the above. :)

But only certain forums as some of the forum scripts are huge resource hogs.

One, maybe two - but all of the above. Do you sleep? J/K.

Is there *any* forum software that isn't a resource hog?

Do you sleep?
Sleep? What's that? :D