"Bitcoin Cash" is a fork of Bitcoin.

A minority in the Bitcoin world has begun a campaign that claims "Bitcoin Cash" to be the "real Bitcoin". This, however, is factually not true. For this reason I believe that supporters of Bitcoin should not support calling this fork "Bitcoin Cash". It has nothing to offer that existing altcoins such as Litecoins don't, therefore its choice of name is not only cheeky but malicious as it intentionally tries to confuse the public as to what "the real Bitcoin" is.

Here is Roger Ver's reaction to the name "BCash".
http://www.youtube.com/watch?v=OJT2CbfHTpo&t=43m0s

As members of the original Bitcoin forum we have a responsibility to put things right. Fellow Bitcointalk members, I ask you to refer to "Bitcoin Cash" as BCash. Theymos, I ask you to automatically replace all "Bitcoin Cash" references on Bitcointalk with "BCash" to put emphasis on the fact that this altcoin is indeed not Bitcoin.