Wal-Mart and Amazon are rumored to be considering an alliance. A strategic alliance would be a major boost for Amazon, giving it cheaper supplies as well as the cash it urgently needs. It would also benefit Wal-Mart by enhancing its online reach, particularly internationally. However, Wal-Mart will not want to lose online revenues to an external firm. If successful, it may well go on to buy the troubled eRetailer itself.