people i have tried many time for google adsense but every time they rejected me this time they are saying my site should be atleast 6 months old.....
you right, at least you website must have 6 month old, otherwise you should have a good content I mean an original one, after that you can apply again on google adsense
There are so many PPC networks available. According to me Adbrite is the best alternative to adsense. Go for it!