In general, mainstream media serves to entertain, excite, scare, and otherwise stupefy the public.
Not exactly a news service, but an archive of background information on news that may have fallen through the cracks.
Guerrilla Underground Network (GUN)
"A co-mutiny of autopoietic insurrection, emergent insurgency, and rhizomatic resistance fighting for total liberation from below." Comprised mostly of former members of the now-closed Guerrilla News Network. 
Independent Media Center (Indymedia)
Diverse sources of locally reported news, mostly by grass-roots activists, describing itself as "a network of collectively run media outlets for the creation of radical, accurate, and passionate tellings of the truth. We work out of a love and inspiration for people who continue to work for a better world, despite corporate media's distortions and unwillingness to cover the efforts to free humanity." 
While visiting your local anarchist bookstore (aka infoshop) is a great idea; the infoshop news site is pretty good, compiling dozens of news stories relevant to an anarchist perspective daily. 
Real News Network
Non-commercial, member-supported news service "focused on providing independent and uncompromising journalism", on "the critical issues of our times". Webcasts and contracts with cable and satellite channels. 
Want To Know
Quoting the website: "Reliable verifiable information on major cover-ups and a call to work together for the good of all. This website provides a concise, reliable introduction to vital information of which few are aware. We specialize in providing fact-filled news articles and concise summaries of major cover-ups which impact our lives and world." 
To quote the website: "Wikileaks is developing an uncensorable Wikipedia for untraceable mass document leaking and analysis. Our primary interest is in exposing oppressive regimes in Asia, the former Soviet bloc, Sub-Saharan Africa and the Middle East, but we also expect to be of assistance to people of all regions who wish to reveal unethical behavior in their governments and corporations. We aim for maximum political impact. Our interface is identical to Wikipedia and usable by all types of people. We have received over 1.2 million documents so far from dissident communities and anonymous sources." 
Wikinews is a web-based news service with amateur and professional reporters from all over the world, all presented with an impartial view. Articles in a wide number of themes, formats, regions and languages can be had for free! 
Original NEWS SERVICES
Aside from UPS, which is the association of papers, there are five news services that we know of that you might be interested in subscribing to for national stories, photos, production ideas, news of other papers and general movement dope. LNS is the best known. It sends out packets once a week that include about thirty pages with original articles, eye-witness reports, reprints from foreign papers and photographs. They tend to be heavily political rather than cultural and view themselves as molders of ideology rather than strictly a service organization of the underground papers. A subscription costs $15.00 per month, but if you're just starting out they are good about slow payments and such.
You should get in the habit of sending special articles, in particular eye-witness accounts of events that other papers might use, to one or more of the news services for distribution. If you hear of an important event that you would like to cover in your newspaper, call the paper in that area for a quick report. They might send you photos if you agree to reciprocate.
- LIBERATION NEWS SERVICE-160 Claremont Ave., New York, N.Y. 10027 (212) 749-2200
- COLLEGE PRESS SERVICE-1779 Church St., NW, Washington, D.C. 20036 (202) 387-7575
- CHICANO PRESS ASSOCIATION-La Raza, Box 31004, Los Angeles, California 90031
- G.I. PRESS SERVICE-Rm 907, 1029 Vermont Ave., NW, Washington, D.C. 20005
- FREE RANGER INTERTRIBAL NEWS SERVICE-Box 26, Village Station, N.Y., N.Y. 10014 (212) 691-6973
A complete and up-to-date list of G.I. underground papers can be obtained by writing to G.I. Press Service, 1029 Vermont Ave., NW, Rm 907, Washington, D.C. 20005. G.I. Alliance provides excellent national newsletters with all sorts of ways to fuck up the Army. Write G.I. Alliance, PO Box 9087, Washington, D.C. 20003. The phone is (202) 544-1654. American Serviceman's Union, 156 5th Avenue, New York, N.Y., 10010 will also help, as well as provide legal and medical aid to G.I.'s.
A complete and up to date list of Chicano underground papers can be obtained by writing to Chicano Press Association, La Raza, Box 31004, Los Angeles, California 90031.
The Young Lords Organization paper Palante can be obtained by writing to Young Lords Party, Ministry of Finance, 1678 Madison Ave., New York, N.Y. 10029. It's $5.75 for 24 issues.
The Black Panther Party paper can be obtained by writing to Black Panther Party, Ministry of Information, Box 2967, Custom House, San Francisco, Calif. 94126. It's $7.50 for 52 issues.