Shortensh is a popular anonymously owned url shortener with not very high rates for most countries, but it may be good for some. Currently, it monetises only with adult ads, which may be a disadvantage.
1 Banner from exoClick - $0.1 (CPC, CPM, RPM)
4 Natives from exoClick - $0.3 (CPC, CPM, RPM)
2 PopUps from exoClick - $1.2 (CPM)
Again, just like most shorteners, the second page has the exact same amount of ads.
Altogether, the earnings for this shortener for its lowest paid countries, which are given $1.5, is $3.2
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.