HilltopAds works on a CPM and CPA basis and have big volumes of global traffic, for both desktop and mobile devices (non-mainstream and mainstream traffic). All our traffic comes from direct publishers (in banners and pop-unders). As for verticals we can try utilities, software, mobile subscriptions, videos and games. We have already been working with such companies as YeahMobi, BillyMob, Kimia, UCUnion etc. And we’re always open for new partners.