Here is a collection of free Press Release distribution sites where you can submit your press releases to get traffic and links:

press-releases.blogspot.com
www.1888PressRelease.com
www.24-7PressRelease.com
www.AddPR.com
www.businesswire.com
www.click2newsites.com
www.clickpress.com
www.corporatewire.net
www.eCommWire.com
www.emediawire.com
www.e-xl.com
www.Express-Press-Release.com
www.Free-News-Release.com
www.FreePressIndex.com
www.free-press-release.com
www.Free-Press-Release-Center.info
www.freepressreleases.co.uk
www.google.com/base
www.i-newswire.com
www.i-newswire.com/
www.marketwire.com
www.media-press-release.com
www.newswire.ca
www.NewswireToday.com
www.newswiretoday.com/
www.openpr.com
www.openpress.com
www.PR.com
www.pr9.net
www.prbot.com
www.PRbuzz.com
www.Press.ArriveNet.com
www.PressAbout.com
www.Press-Base.com
www.pressbox.co.uk
www.PressMethod.com
www.pressradar.com/suggest
www.pressreleasenetwork.com
www.press-service.net
www.press-world.com
www.prfree.com
www.pr-inside.com
www.prleap.com
www.PRlog.com
www.prlog.org/
www.prnewswire.com
www.prurgent.com
www.prurgent.com/submit_press_release.htm
www.prweb.com
www.prwebdirect.com
www.PRzoom.com
www.publicrelations.uk.com
www.samplepressrelease.info
www.softpressrelease.com
www.theopenpress.com
www.ukprwire.com
www.urlwire.com
www.usprwire.com
www.webwire.com