Hosting and Collocation

Comparision: http://www.vix.com/personalcolo/

Seems cheap & serious:

• Quonix (http://www.quonix.net/cgi-bin/colopricing.cgi?action=home) starts from 75$ per month (12 month contract)
• ColocationAmerica (http://www.colocationamerica.com/products/colocation) starts from 75$ per month (without contract, looks +++)

List:

• http://www.rackspace.com
• StackOverflow & plentyoffish use http://www.peer1hosting.co.uk/ (see http://highscalability.com/plentyoffish-architecture)
• Many use http://mediatemple.net

Collocation:

• http://www.layer42.net/services/colo.html