Here are some really AMAZING viral sites where you can share your text or banner ads for FREE. 

Text ads:
Reach a million hits 1
Reach a million hits 2
Reach a million hits 3

Paid ad:
MASSIVE ad submitter

TIP: Promote your own link to increase your exposure as well as helping others, too.

The condensed version:
ALL members earn here

EARN $2 for each referral who posts a paid ad on this site!