You guys are seriously complaining that you can't withdraw .005 btc that is handed away for free for site testing? You selfish little infants.
The reason behind the giveaway is obvious. In Bitcoin land, you don't just carelessly deposit money into every new site that pops up. Doing so is asking to get scammed sooner or later. So, they take the risk away from you by depositing a small amount of btc into your account so you can test the site to make sure nothing funny is going on. Once you see the site is working okay, you'll feel more comfortable about depositing your own money.
Would it surprise you to learnt the the dude cryin' is none other that John Hammes aka BitJohn of Cryptsy? tia! (ref. [for tia!]: http://investorshub.advfn.com/boards/read_msg.aspx?message_id=107109424)