The radio loyalty task is easy and a good way to get points throughout the day. I personally like CrowdFlower. There are usually easy tasks to complete and some will offer bonuses that get paid out daily. Since you are in the US you should be able to do these without any problems. Surveys can be profitable but alot of the time you go through qualification and then find out you aren't qualified. This is annoying but usually only takes a few minutes then you can complete the survey or move on.