Brady Magazine
Markets, contests , workshops and article on all different styles of writing.

WritersServices.com
Information and advice on all aspects of writing, including self publication and agent listings. Also has a writers' showcase.

Gary Leeming

Robert J Sawyer
The Canadian SF author has a fantastic site, with lots of advice about writing and the business of writing. Recommended reading for all writers.

Keris Stainton

Ginny Swart

Acronym Finder
Over 4 million acronyms and abbreviations

Businessjournalism.org
Useful site for anyone writing about business or financial topics

Fagan Finder
Search for quotes and proverbs

Google Scholar
Search abstracts, articles, theses and research from academic journals and organisations.

Newseum: the interactive museum of news
View newspaper front pages in 54 countries

Refdesk.com
Family friendly guide to finding information on credible, quality web sites.