Check out the Free Bitcoin Sites List:
https://bitcointalk.org/index.php?topic=90718.0The sites are verified in that list.
You have to be careful with many of those survey, and download apps sites ( who knows what you
may be installing ), etc., especially if they ask for access to your facebook profile and ask to post in
your name... you don't know what trouble you may be getting yourself into. Opening yourself up
to spam, for yourself and your friends/followers, may be the least of what you could expect.