For those who are not familiar with KGW (Kimoto Gravity Well - invented for Megacoin) then this article http://cryptofrenzy.wordpress.com/2014/02/09/multipools-vs-gravity-well/ might help.

Also read this article regarding 42Coin and plans to implement KGW and/or PoS etc ((and why) https://bitcointalk.org/index.php?topic=500968

I don't understand why people here are happy that 888 isn't using KGW given it's effectiveness against multi-pool mining when the 2 articles above both state KGW is a good thing.

Would someone like to explain?

Cheers,
Mark