Adf.ly is a money earning website and a short URL generator that allow user to shorten their URL, while earning from it. Adf.ly has its great interface for their reports, realtime results, allow users to view the current clicks, the list of shorten URL, and the total revenue. You may also used their Advertiser area, where you can post your ADS to their website.
If you can generate 100 views per day, you are likely to earn 0.02 to 0.07 a day, or $25.00 a year. The minimum payout of Adf.ly is $5.00. Below is the proof of PayPal payment I got from Adf.ly last November 2011: