I don't want this to turn into the Classifieds section :), but furfly is getting ready to offer this service (OpenACS hosting) as well. We install new servers at Exodus next week (if the planets align correctly, that is) and it looks like we'll be ready for people to get started in the second half of June. We will be converting some of our smaller sites over to OpenACS, time permitting, so we can decommission our shared Oracle server. There's no need for it anymore!
Our shared server will be a Dell 2450s Poweredge; if you need a dedicated server we can get just about anything you want but we're really impressed with Dell so far.
E-mail me for details, if you're interested.
