The following are either free or low cost sites for submission of press releases:

• 1888 PressRelease.com: http://www.1888pressrelease.com/
• 24-7PressRelease.com: http://www.24-7pressrelease.com/
• EcommWire: http://ecommwire.com/
• Express Press Release:

  http://express-press-release.com/submit-press-release.php

• Free News Release: http://www.free-news-release.com/
• Free Press Release Center: http://www.free-press-release-center.info/
• FreePressRelease: http://www.free-press-release.com/
• I-Newswire.com: http://i-newswire.com/
• Malebits: http://www.malebits.com/
• Media Press Release: http://www.media-press-release.com/
• MediaSyndicate: http://www.mediasyndicate.com/
• PowerHomeBiz: http://www.powerhomebiz.com/BizNews/pressrelease.htm
• PR.com: http://www.pr.com/
• PR Leap: http://www.prleap.com/
• PR Newswire: http://www.prnewswire.com/
• PR9: http://www.pr9.net/
• PressExposure: http://pressexposure.com/
• Pressmethod: http://www.pressmethod.com
• PRLog: http://www.prlog.org/
• PRweb: http://www.prweb.com/
• PRZoom: http://www.przoom.com/
• The Open Press: http://theopenpress.com/ 

• Xtvworld.Com: http://press.xtvworld.com/

Note that after submission and approval you will receive additional resources such as this badge:

Mlearnopedia Featured New Mobile Learning Content Community Resource Ava... February, 2009 @ 1888PressRelease.com

See also Sample Press Release