This looks so useful I just had to share it.  A site that lists 800 numbers for lots of the bigger online corporations.  (You know the ones, who generally bury phone contact info deep in their websites....)
http://www.hardtofind800numbers.com/index.htm 

Essentially, this is an alphabetical directory that lists the 800 numbers for places like Amazon, Microsoft, and Yahoo, plus many more. These numbers are becoming increasingly difficult to locate (quite impossible sometimes...) on websites, and rather than waste time searching for the phone number, try looking at this website and save some time.

One I'm bookmarking for sure....