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I'd like to point out something very important which is currently someone sent in a transaction of 19 BTC - https://blockexplorer.com/address/1GCgBLjxEjeJs5PKt7TJgUdZDDsnViANVc and it's currently stuck / very slow to confirm because of the fee used (0.00002302 BTC), please use an appropriate fee when sending in coins since you will not be credited until there are 3 confirmations!!Does this mean those coins are stuck there now or what? That's such a small fee I think it will never get processed. That must suck for that person, lol.
You should probably research the blockchain and what happens when you send with low fee etc. Eventually it will be confirmed if it is re-broadcasted again it could/should be quicker you have to know someone or you ask a fellow bitcoiner on the forum to help. Or in the case above double spend it. It is time consuming for that person but not the end of the world I am sure the guys will still give him his deposit bonus and it's not like it was sent to a wrong address, (now that would suck) lol