Many years ago I created a URL shortener that gained some popularity and I made some good money with AdSense until one day when it stopped showing ads. After a few weeks I tried Chitika but 560 244 impressions just gave me $1 so I removed it and went ad free. Today I logged in to my old analytics account and noticed that the site is still getting 4-6000 unique daily visitors with one peak right below 100 000 visitors in a day. Surely it must be possible to make some money? I've searched around and found one recommendation of adding my own affiliate ID to sites like Amazon but it's mostly low value links with only a handful of those kind of sites. Any ideas?