I've tried many free bitcoin sites, and they are a waste of time. The size of the bitcoin is small...very very small.
Thanks for your input.
Each will decide for themselves whether the small amount of time used to input a BTC address into a form and then complete a captcha to get the small prize is wasted or not.
What good is it if one only gets very very small amounts?
https://bitcointalk.org/index.php?topic=74046.msg1088930#msg1088930