That's from amaclin's magic doubler.
Don't use the bitcoins to purchase anything because that transaction won't confirm and will be removed from the network eventually.'
If you're using blockchain.info. Please help stop this madness by complaining to their support. In most wallets you won't even see those transactions and they can do something about it to make their service safer.
So this simply means that it will be reversed soon.
I hope this will happen soon because I get payments to my only above mentioned address and if I receive paymnet then the bitcoins will merged with that transaction and when I will send the bitcoins to somewhere it will not get confirm and maybe I will lose my money too?
Anyway to get rid of it?