MAR, as it likes to call itself is a rather farcial pro-equality site that discourages activity, and expects that racist metal bands will simply stop spreading their hatred out of the good of their hearts.
MAR has a member list mostly consisting of bands you've never heard of and will continue to ignore.
The owner(s) obviously aren't real metal fans since they seem to have rather cloudy and unreasonable views as to what metal actually is. They also deplore the idea of free speech and freedom of decision.
Fortunately, they happen to have one of the most hiliarious hate-mail pages on the net.
Hey, look at this guy who sent in hate-mail to metalheadsagainstracism.org