You want to go with Rackspace cloud sites. I think its basically shared hosting with lots of sites on lots of machines. http://www.rackspace.com/cloud/cloud_hos

You want to go with Rackspace cloud sites. I think its basically shared hosting with lots of sites on lots of machines. http://www.rackspace.com/cloud/cloud_hosting_products/sites/pricing/ http://www.rackspace.com/cloud/cloud_hosting_products/sites/... AppHarbor/heroku don't really seem suitable to me - they charge per worker