Shrinkearn & Clk is a popular url shortener, that is never struggling to monetise its links well, as the owner seems to be an expert with ad networks.
Simple ads over the two pages:
Galaksion Native x2 - $1.6 (CPM, CPC, CPA, RPM)
AdTrue x1 - $0.3 (CPM)
Moneytizer x1 - $0.3 (CPM)
PropellerAds x2 - $0.8 (CPM)
m10 x2 - $2 (CPA, CPM)
RPM - Earnings from Clicks and CPM in ad networks altogether per 1000 impressions.
CPM - Earnings from just views and no clicks per 1000 impressions
CPC - Earnings for 1 click
CPA - Earnings when someone completes an action such as a signup.