Here's a round up of some known and little known PPC's.
http://www.1on1search.com/ Give you $10 free when you open an account
http://www.1second.com/ Free $10
http://www.101homeresources.com/ Only for home ressource sites
http://www.123-click.co.uk/ minimum bid 1c!
http://www.4-seek.com/ Minimum deposit $5
http://411seek.com/ 25% bonus on first deposit
http://www.411web.com/ minimum deposit $25.00
http://www.911search.com/ free $5 worth of clicks
http://www.abseesearch.com/ $25.00 min deposit
http://www.accumeta.com/ deposit $20 and get $40 free!!!
http://www.anticomedia.com/ 3 diffrent types of listings availiable
http://www.anticsearch.com/ Minimum deposit $1
http://www.findbig.com/ $2 bonus
http://www.arrowsearch.com/ minimum bid $5.00
http://www.askwebinfo.com/ they match your initial deposit up to $50
http://www.atomicbot.com/ minimum $10 deposit
http://ban-x.com/ minimum deposit $10- they give you 250% bonus on this!
http://www.bananapile.com/ $30 minimum -express inclusion
http://www.bestfetch.com/ free $10 when you deposit $5
http://www.bsearchengines.com/ $10 free to all new accounts
http://betclubs.com/ $50 deposit-$10 free
http://www.blazerunner.com/ $25 minimum
http://brainysearch.com/ they will double your initial deposit!
http://www.bridalclicks.com/ Wedding and Bridal sites only
http://www.browsecrawler.com/ they will start you off with $25.00
http://www.bxb.biz/ For bed and breakfast/accomodation sites
http://www.ceeker.com/ $10 sign up bonus
http://www.cookinglinkcentral.com/ For cooking and related websites
http://www.craftsearch.org/ First 10 clicks free
http://crossdaily.com/ Christian Search Engine
http://www.datamine.info/ Has a good affiliate programe
http://www.efind.com/ $100 sign up bonus
http://www.esearchzone.com/ $10.00 bonus
http://www.findbig.com/ $2 bonus
http://www.findit-fast.com/ Free $10 trial
http://www.findlaunch.com/ $25.00 free trial
http://www.findology.com/ Gets 2.5 million searches a month
http://www.gazabo.com/ Deposit $75 and get $200 in credits free
http://www.gigasearchcity.com/ $10 trial offer
http://www.gogeter.com/ free $25 to start you off
http://www.googlefound.com/ free $10 worth of clicks
http://www.harryknows.com/ $25 to get you started free
http://www.hotsearchnet.com/ $25 minimum deposit
http://www.jiffyseek.com/ free$10
http://www.kazazz.com/ deposit $100 and they will match it
http://www.mammothsearch.com/ free $10 credit
http://www.meteorsurf.com/ $25 free at initial sign up
http://www.nerdfinder.net/ $25.00 free to kick off
http://www.page-1.com/ they double your initial deposit
http://www.promptsurf.com/ $10 of clicks free
http://www.realook.com/ $25.00 of clicks free
http://www.searchnshop.com/ they match your initial deposit
http://www.searchwiser.com/ 5% bonus on deposits
http://www.seekerbug.com/ $10 free trial
http://www.seekpony.com/ free $25.00 deposit on sign up
http://travelhub.com/ travel related
http://www.tutorgig.com/ start account with $5.00
http://www.workathomesearchengine.com/ for work from home related sites
http://www.zugbo.com/ $5.00 free to get you started.