I do Not Recommend Upgrading to Any Program that is New until it can pass verification by authorities but many new programs still have benefits of joining for free.
1)TrafficAdbar http://trafficadbar.com/promember - Excellent and Free 
- I havent Upgraded yet as I dont know enough about it but the Free Membership is Excellent
EasyHits4U http://a.easyhits4u.com/splash13.php?ref=independentso --- Good to promote your websites and blogs and they pay you for surfing. FREE TO JOIN
TrafficWitch http://www.trafficwitch.com/?rid=37440 - Manual Hit Exchange - FREE to Join - Im New to this one and had a few teething problems but they were very helpful sorting me out.
PeopleString - Pays you to Network and do things online you do already http://peoplestring.com/?u=independentso
GeoString - I am filling up my GeoString with some of the methods listed above and its going good! I have 7 new signups in just under a week Very Pleased as all methods im using are FREE. http://www.geostring.com/?1014295 - Plus they give you $10 for Signing up.
If you know of any other good FREE programs BUZZ me and let me know what you think of my items listed above.
BusyBee 
SWOM http://swom.com/?r=53977 The social network for marketers and home-based businesses. FREE to Join. Option to Upgrade but once again better checking it out first.