Here's a list to get you started...
CPA Empire
http://www.payperclickformula.com/cpaempire
Hydramedia
http://www.payperclickformula.com/hydramedia
Incentaclick
http://www.payperclickformula.com/incentaclick
Neverblue Ads
http://www.payperclickformula.com/neverblueads
Filinet
http://www.payperclickformula.com/filinet
Affiliate Fuel
http://www.payperclickformula.com/affiliatefuel
AZoogleAds
http://www.payperclickformula.com/azoogle
Revenueloop
http://www.payperclickformula.com/revenueloop
Primary Ads
http://www.payperclickformula.com/primaryads
Other Affiliate Networks:
ABC Leads
http://www.abcleads.com
Ad Fish
http://www.adfish.net
Ad Valient
http://www.advalient.com
Adreporting.com
http://www.adreporting.com
AdsMarket
http://www.adsmarket.com
Affiliate Cop
http://www.affiliatecop.com
Affiliate Future
http://www.affiliatefuture.co.uk
Affiliate Network
http://www.affiliatenetwork.com
Affiliate Window
http://www.affiliatewindow.com
Affiliateer
http://www.affiliateer.com
Amped Media
http://www.ampedmedia.com
Blue Lithium
http://www.bluelithium.com
Bullet Ads
http://www.bulletads.com
CheckMyStats
http://www.checkmystats.com.au
ClickExchange.com
http://www.clickexchange.com
ClixGalore
http://www.clixgalore.com
ClickBooth
http://www.clickbooth.com
Commission Junction
http://www.cj.com
Commission Soup
http://www.commissionsoup.com
Copeac
http://www.copeac.com
CPA Junction
http://www.cpajunction.com
CPA Storm
http://www.cpastorm.com
Cyber Bounty
http://www.cyberbounty.com
Dark Blue
http://www.darkblue.com
Direct Leads
http://www.directleads.com
Envision Ads
http://go.envisionads.com
Fineclicks
http://www.fineclicks.com
Floppy Bank
http://www.floppybank.com
Flux Ads
http://www.fluxads.com
Lead Click
http://www.leadclick.com
Lead Creations
http://www.leadcreations.com
Leadhound
http://www.leadhound.com
Leader Markets
http://www.leadermarkets.com
Link Connector
http://www.linkconnector.com
LinkShare
http://www.linkshare.com
Market Leverage
http://www.marketleverage.com
Modern Clicks
http://www.modernclick.com
Net Margin
http://www.netmargin.com
Offers Quest
http://www.offersquest.com
Offerweb.com
http://login.offerweb.com
Paid On Results
http://www.paidonresults.com
Partners Edge
http://www.partnersedge.com
Performics
http://www.performics.com
Prime Q
http://www.primeq.com
Rextopia.com
http://www.rextopia.com
Revenue Gateway
http://www.revenuegateway.com
Rocket Profit
http://www.rocketprofit.com
ROI Rocket
http://www.roirocket.com
Share Results
http://www.shareresults.com
ShareASale
http://www.shareasale.com
The Affiliate Window
http://www.theaffiliatewindow.com
Traffic Needs
http://www.trafficneeds.com
Traffic Synergy
http://www.trafficsynergy.com
Turn2Offers
http://www.turn2offers.com
ValueClick
http://www.valueclick.com
Web Jam Ads
http://www.webjamads.com
CPA Empire
http://www.payperclickformula.com/cpaempire
Hydramedia
http://www.payperclickformula.com/hydramedia
Incentaclick
http://www.payperclickformula.com/incentaclick
Neverblue Ads
http://www.payperclickformula.com/neverblueads
Filinet
http://www.payperclickformula.com/filinet
Affiliate Fuel
http://www.payperclickformula.com/affiliatefuel
AZoogleAds
http://www.payperclickformula.com/azoogle
Revenueloop
http://www.payperclickformula.com/revenueloop
Primary Ads
http://www.payperclickformula.com/primaryads
Other Affiliate Networks:
ABC Leads
http://www.abcleads.com
Ad Fish
http://www.adfish.net
Ad Valient
http://www.advalient.com
Adreporting.com
http://www.adreporting.com
AdsMarket
http://www.adsmarket.com
Affiliate Cop
http://www.affiliatecop.com
Affiliate Future
http://www.affiliatefuture.co.uk
Affiliate Network
http://www.affiliatenetwork.com
Affiliate Window
http://www.affiliatewindow.com
Affiliateer
http://www.affiliateer.com
Amped Media
http://www.ampedmedia.com
Blue Lithium
http://www.bluelithium.com
Bullet Ads
http://www.bulletads.com
CheckMyStats
http://www.checkmystats.com.au
ClickExchange.com
http://www.clickexchange.com
ClixGalore
http://www.clixgalore.com
ClickBooth
http://www.clickbooth.com
Commission Junction
http://www.cj.com
Commission Soup
http://www.commissionsoup.com
Copeac
http://www.copeac.com
CPA Junction
http://www.cpajunction.com
CPA Storm
http://www.cpastorm.com
Cyber Bounty
http://www.cyberbounty.com
Dark Blue
http://www.darkblue.com
Direct Leads
http://www.directleads.com
Envision Ads
http://go.envisionads.com
Fineclicks
http://www.fineclicks.com
Floppy Bank
http://www.floppybank.com
Flux Ads
http://www.fluxads.com
Lead Click
http://www.leadclick.com
Lead Creations
http://www.leadcreations.com
Leadhound
http://www.leadhound.com
Leader Markets
http://www.leadermarkets.com
Link Connector
http://www.linkconnector.com
LinkShare
http://www.linkshare.com
Market Leverage
http://www.marketleverage.com
Modern Clicks
http://www.modernclick.com
Net Margin
http://www.netmargin.com
Offers Quest
http://www.offersquest.com
Offerweb.com
http://login.offerweb.com
Paid On Results
http://www.paidonresults.com
Partners Edge
http://www.partnersedge.com
Performics
http://www.performics.com
Prime Q
http://www.primeq.com
Rextopia.com
http://www.rextopia.com
Revenue Gateway
http://www.revenuegateway.com
Rocket Profit
http://www.rocketprofit.com
ROI Rocket
http://www.roirocket.com
Share Results
http://www.shareresults.com
ShareASale
http://www.shareasale.com
The Affiliate Window
http://www.theaffiliatewindow.com
Traffic Needs
http://www.trafficneeds.com
Traffic Synergy
http://www.trafficsynergy.com
Turn2Offers
http://www.turn2offers.com
ValueClick
http://www.valueclick.com
Web Jam Ads
http://www.webjamads.com