Reference Sites

Digital Cameras/Photography
E-Text Sources (free!)

Online Encyclopedias



Education online history site in the UK - Maps of Iraq

US Copyright Information

Dictionaries etc.
Merriam-Webster's online language tools

Unit conversions (metric to English, etc)

Unit conversions

Computer File Formats

What Is.COM's list of every file extension known. That's what they say. Descriptions are sketchy at best, incomplete or wrong at times (ACL = Corel Draw 6 keyboard accelerator file? Maybe, but how about Access Control List? Jeez.)

There's lots of other interesting info on the main site.

The descriptions are more complete at and quite a few of the file format entries include links to detailed format info. And alas, the site has some *really* annoying ads and popups. The price we pay ...

Computer Hardware
Ars Technica

CDs, DVDs, Specs