Advertise with Adbrite to make money with adsense?

Hi all
To get my traffic up I was thinking of doing some advertising with Adbrite.
My qustion has anybody done advertising with ppc to bring traffic to there site in order to make money on adsense.
Will I end up paying more than I will earn.
Have you done it?
Please advise me if you can:)

See original post by eabharoid