I’ve said it before: trying to compare web hosting is a PITA.
Who Is Hosting This.com does what it says on the tin: tells you which webhost any site is using.
It’s not 100% accurate – some major hosts appear as the company they lease servers from (often larger hosts like The Planet). But it’s a damn fine ready reckoner.
Along these lines, the site today publishes a breakdown of who A-list bloggers host with.
Update October 2008: WhoIsHostingThis.com has relaunched with a new look and feel, improved results, hosting reviews and hosting coupons.