AdSense - Earn money with website monetization from Google AdSense. We'll optimize your ad sizes to give them more chance to be seen and clicked.
V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
Comicad Network - Comic Ad Network is an advertising service by comic authors, for all art authors, its main purpose is to provide authors advertising opportunities for "Comics, Art & Games" niche. All publishers are accepted.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
AdHitz - Lets you sell ad space on your site. You choose the details and then paste the code to your site.
Google Audience Center - 3 votes and 6 comments so far on Reddit