Forums for sure and craigslist is about as good as it gets for free advertising. Of course, it depends what your advertising...?
you can do free advertisement in free classified websites.....and you can also get business from that free classified websites
try these sites: free clasified list http://www.fresnomall.com http://www.muskurahat.com/classified2/ http://www.aufreeads.com http://www.estia.com http://www.worldslist.com http://www.ad-mart.co.uk http://www.mike.mennell.org/cgi-bin/classifieds.cgi http://www.4-your-life.com/class/classifieds.cgi http://www.sasibiz.com/scgi-bin/class/classifieds.cgi http://www.thefreecashmachine.com/cg...lassifieds.cgi http://www.downthebarrell.com/cgi-bi...lassifieds.cgi http://www.bestmyportalsite.info/cgi...lassifieds.cgi http://www.neil-lilley.com/cgi-bin/a...lassifieds.cgi http://www.greenspannermechanic.com/...lassifieds.cgi http://www.freeclassifieds.mukallaho...lassifieds.cgi http://www.alamonet.com/Classifieds/...p?CategoryID=0 http://www.cashscripts.com/cgi-bin/classifieds.cgi http://www.pcadz.com/cgi-bin/classifieds.cgi http://www.freetraderonline.com/placefreead.htm http://www.vancouver-bc.com/PostClassified/ http://www.newquestcity.com/natclass.htm http://www.ourbangla.com/ad http://www.freeclassyfied.com/cgi-bi...lassifieds.cgi http://www.0-nethosting.com/cgi-bin/...lassifieds.cgi http://www.808classifieds.com http://www.abmresourcesfreeads.yuku.com/ http://www.adadoo.com http://www.adforfree.com http://www.adsfordeals.com http://www.adverts-4-all.com http://www.adv-marketing.com/marketi...assified.htm#1 http://www.agreatindian.com/ http://www.amazingfreeads.scripts4ho...lassifieds.cgi http://www.amcho.com/add_ad_0.htm http://www.automatedprofits.com/cgi-...lassifieds.cgi http://www.bestmall.com/class/submit.html http://www.bizwits.com/cgi-bin/class...lassifieds.cgi http://www.buyittime.com http://www.buysellauctiononline.com/index.php http://www.callharry.com http://www.campscorner.com/cgi-bin/c...lassifieds.cgi http://www.caretotrade.com http://www.cashway.com/cgi-bin/class...lassifieds.cgi http://www.clas.adventureshopper.biz/index.htm http://www.classified.downeastmarket.../classified.pl http://www.classified.faizent.com/modules/catads/ http://www.classified-adverts.com http://www.classifiedmontrealads.com http://www.classifieds.abacin.com http://www.classifieds.atomicbot.com http://www.classifieds.blackworld.com http://www.classifieds.click4choice.com http://www.classifieds.richardmcginn...lassifieds.cgi http://www.classifiedtorontoads.com http://www.classifiedvancouverads.com http://www.clickindia.com/aboutus.html http://www.clipcopy.com/cgi-bin/class/classifieds.cgi