There is no lack of traffic out there.
You don’t have a traffic problem. You have a conversion problem.
This is not an endorsement of any of the networks included.
Also note that many of these networks actually fit in multiple categories. For Example, Adwords is a pay-per-click search engine, a display network, and does retargeting.
If you have any additional networks to add, please add them in the comments section below.
Pay-Per-Click Search Engines
http://www.google.com/adwords
http://advertise.bingads.microsoft.com
http://www.7search.com
http://www.miva.com
http://www.looksmart.com
http://www.advertise.com
http://www.admarketplace.com
Social
https://www.facebook.com/advertising
http://www.linkedin.com/advertising
https://business.twitter.com/en/a/get-started.html
https://ads.pof.com
https://www.stumbleupon.com/pd
http://www.reddit.com/ad_inq
http://izea.com
Display Advertising
http://www.sitescout.com
http://www.adready.com
http://www.tribalfusion.com
http://www.clicksor.com
http://www.adbuyer.com
http://www.valueclickmedia.com
http://www.adpepper.com
http://www.cpxinteractive.com
http://www.cbsinteractive.com/advertise/self-service-campaign
https://www.adversal.com
http://www.adperium.com/advertise
http://www.rightmedia.com
Text Ads
http://www.advertising.com
http://adblade.com
http://yabuka.com
http://www.adperium.com
http://adside.com
http://www.bidvertiser.com
http://www.finditquick.info/myreach.php
http://chitika.com/advertisers
http://www.industrybrains.com
http://www.affinity.com
http://advertising.ezanga.com
Pay-Per-View
http://www.traffivance.com
http://www.mediatraffic.com
http://www.directcpv.com
http://adonnetwork.com
http://regexnetwork.com
Contextual Links
http://www.resultlinks.com
http://www.vibrantmedia.com
http://www.infolinks.com
http://www.inlinks.com
http://www.admanage.com
Sponsors
http://www.sponsoredreviews.com
http://buysellads.com/advertisers
http://web.blogads.com
Email Marketing
http://www.arcamax.com/mediacenter
http://www.newsmax.com/advertise
http://www.mydailymoment.com
http://www.directoryofezines.com
http://www.safeswaps.com
http://adclickmedia.com
http://ad.net
Video Ads
http://www.youtube.com/yt/advertise
http://www.yume.com
http://www.brightroll.com
Mobile
http://www.adoptim.com
http://www.inmobi.com
http://www.buzzcity.com
http://adfonic.com/mobile-advertising-services/advertisers/
http://www.greystripe.com/advertise
http://www.jumptap.com/advertisers
http://mmedia.com
Retargeting
http://www.adroll.com
http://www.google.com/adwords
http://fetchback.com
http://retargeter.com
Cheap Low Quality Traffic
http://www.adhitz.com
http://www.adoori.com
http://www.clixsense.com
http://www.neobux.com
http://ity.im
http://adf.ly
Offline Advertising
http://www.Mediabids.com
http://www.nextmark.com/media-finder/