Writing Aids

Webster Dictionary
http://www.m-w.com/netdict.htm
An online dictionary.

Encyclopedia.com
http://www.encyclopedia.com/
An online encyclopedia.

Acronym Finder
http://www.acronymfinder.com/
Look up 140,000+ acronyms/abbreviations & their meanings.

American Slanguages (Foreign SLANGUAGES Too)
http://www.slanguage.com/
Talk like the locals in cities in America and around the world.

Wordsmyth
http://www.wordsmyth.net/
The Educational Dictionary-Thesaurus