Is anyone forking OpenBazaar for Ethereum? OpenBazaar is a Bitcoin marketplace, and the OpenBazaar developers have expressed no interest to integrate any currencies other than Bitcoin.
No. This wont easily happen.
It's not really possible to fork OpenBazaar to work with Ethereum, as very basic design principles of OpenBazaar work based on the Bitcoin pay to script hash (P2SH) multisignature and escrow accounts.
To port OpenBazaar to work with Ethereum style smart contracts it would probably be easier to start from scratch. As other answers in this thread pointed out there are already such initiatives.