It is best to use the original "Where do I get free Bitcoin? The maintained list of verified free Bitcoin Sites" thread to see the full list of free bitcoin sites. This thread is to allow newbies, who can't yet post in the main thread, to post on the subject of free bitcoin sites. Some of the better ones are in my sig.
If you have a site that gives out free bitcoins, or know of one, then please submit a link to it in that thread, or this one if you are still on newbie restrictions. Any input is welcome including a quick "thanks" or "hello".