AdFish Advertising 24/7 Real Media Absolute Agency Accelerator Media AdAgency 1 AdBrite Ad Dynamix Ad Engage Ad Force Adgenta AdKnowledge AdLink AdOrigin AdSmart Adtegrity AdZuba AdReporting AdterActive AffiliateBot Affiliateer AffiliateCop Affiliateer AffiliateFuture AffiliateWindow Amazon AmpiraMedia Azoogle AzoogleAds ASN Axill ... You may personally visit the complete list of CPA Networks I consolidated so far at : freebiztraffic-arsenal.blogspot.com/2009/01/list-of-cpa-networks.html Hope you find it helpful.
Epic Edge Media, Incent Reward, Amped Media, Express Revenue are all great. For additional networks, you can check in my link for some reliable networks.
Are there any CPA Networks that don't require you to have your own website? Can you just promote using your Direct CPA Referral Link at Social Media Sites where there is Tons of Traffic? Which CPA Networks are easy to get into ...yet reputable?
Very reputable is peerfly, ads4dough, adscendmedia. Peerfly is my favorite but if you want a full list go to offervault.com they have a very extensive and comprehensive list of offers and cpa companies that go with it.
I have a few good networks listed within the affiliates directory I work for. Normally the better ones are listed on the 1st and 2nd pages. Anyway, I would suggest a few, these include ShareASale, CPALead (hot at the moment), NeverBlueAds, MaxBounty, etc.