I have asked coinbase, but their support is painfully slow.
And you thought posting on bitcointalk would make it faster???
LOL.. If I received your coin, I will keep it. Or maybe give you half but mostly keep it. Ive done that already before, sending my coins to other address and yes they kept it. Ive made postings to return it too. The fact that the owner of the address is unknown, you got a lesser chance of getting it back.
damn dude, thats not cool. just imagine it happens to you. it s important to also be able to trust the community
and not only the technical aspect of BTC.
i would def. return them to the source if i receive an unexpected transaction. and i hope that the majority of the BTC
users do the same.
to the OP: send a micro-tx to the addy and provide your e-mail addy or URL of this thread (tx-comment). maybe that helps.. 
