Mega search engines (search several other engines at once):
Google
Dogpile
Metacrawler

Search engines to help you find email/street addresses:
Four11
Anywho

Search engines that list articles for sale (are yours here??)
Northern Light

General Links for Journalists and Authors:
Journalism Ethics for the Global Citizen offers resources for working journalists, newsrooms, media educators, ethicists, researchers and the global public. It focuses on global issues in journalism ethics and tracks and analyzes cases from around the world. The website provides news, expert analysis and essential background on ethical and legal issues.
MediaPro Forum on Delphi - Forum for professional writers.
Author Link - The rights marketplace where editors and agents buy and sell unpublished and published manuscripts and screenplays. Provides the serious writer with access and exposure to the broadest range of legitimate publishing professionals.
U.S. Copyright Office Home Page
Bookwire - Gateway to Publisher's Weekly, Literary Marketplace,  AAR, and other book-related sites
Book Marketing Update - Great How-To Promote Your Book site
Freedom Forum - News and information about First Amendment issues
LitMatch.net - Extensive agent listing with search function. Can track your queries for you. Comments section to discuss your experiences or review that of others.

News sites:
The New York Times
Associated Press
Business Wire - The world's leading commercial newswire globally. More news from more sources to more destinations than any other service in the world.
PR Newswire - PR Newswire provides comprehensive communications services for public relations and investor relations professionals ranging from information distribution and market intelligence to the creation of online multimedia content and investor relations web sites. Its world-leading wire, Internet, satellite and fax network is capable of pinpoint or mass distribution of news releases, video, audio and photos to the media, financial community, and consumers.
ProfNet - Free access by journalists to expert sources from organizations of every type in North America and Europe -- colleges, universities, corporations, think tanks, laboratories, medical centers, non-profit organizations, government agencies, and PR agencies.

Resources for investigative writers:
Federal Trade Commission
National Association of Attorneys General
Insider Trader
KnowX  Background info - some for a fee/some for free. Search liens, judgments, ownership, incorporation records, etc.
Searching4u Social security numbers and other background info for a fee

Resources for health/medical writers:
New England Journal of Medicine
Journal of the American Medical Association

Writers' and other Creators' Organizations
American Medical Writers Association
American Society of Media Photographers
Graphic Artists Guild
Investigative Reporters and Editors
National Association of Science Writers
National Writers Union
PEN American Center
Professional Writers Association of Canada
Science Fiction and Fantasy Writers of America
Society of American Travel Writers
Society of Environmental Journalists
Society of Professional Journalists
Writers Guild of America, East
Writers Guild of America, West

Other Sites of Interest
Poynter.org: Journalism Resource