http://www.3tera.com/
3tera provide a grid platform to deploy "virtual appliances" on a "virtual datacentre" built on top of commodity hardware, similar to Amazon's EC2/S3.
http://www.textdrive.com/
High performance web hosting company, somehow related to WordPress / Automattic.
http://highscalability.com/
This site tries to bring together all the lore, art, science, practice, and experience of building scalable websites into one place so you can learn how to build your system with confidence.
