I thought I'd gather together a list of options for press release submission and distribution. Please note, I've not personally used all of these (the service I have always used and will continue to use is PR Web (noted in the list below with the asterisk - check out my writeup on that service here) but as there are so many options out there, it seemed not a bad idea to provide links to each so you can determine which you prefer:

PAID press release submission and distribution services:
http://www.24-7pressrelease.com/

http://www.addpr.com/

http://www.prweb.com/*

http://www.usanews.net/

http://www.webwire.com/


FREE press release submission and distribution services:
http://free-press-release.com/

http://www.1888pressrelease.com/

http://www.bestmanagementarticles.com

http://www.clickpress.com/releases/

http://www.express-press-release.com/

http://www.free-news-release.com

http://www.free-press-release-center.info/

http://www.mediasyndicate.com/

http://www.newswiretoday.com/

http://www.openpr.com/

http://www.pr.com/

http://www.pr9.net/

http://www.prcompass.com

http://www.press411.com/

http://www.press-base.com/

http://www.pressmethod.com/

http://www.pressreleasespider.com/

http://www.press-world.com/

http://www.prfree.com/

http://www.prleap.com/

http://www.przoom.com/

http://www.sbwire.com/

http://www.ukprwire.com/

http://www.usprwire.com/

__________________