This act of asking for verification is fairly standard in the affiliate network space which is where LeadBolt originally came from. They do this...
Well, impressions usually means how many times the ad was viewed. So if your users were in a country where the fill rate was low, you could've...
^ I'll probably be testing out one of the push notification networks but remember that eCPM isn't everything. if the fill rate is crap, the eCPM...
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