the only one that I can think of or that I know of is Linkbee. ( url shortener) I didn't put money into it just some time here and there. I describe it here. . . [video=youtube;JIT3iyOYAZ0]http://www.youtube.com/watch?v=JIT3iyOYAZ0[/video] and more details here including stats to show they don't pay anymore: http://stuff4you.hubpages.com/hub/Dont-invest-in-LinkBee