Rich, I don't know why you're always so cynical... however, here's the explanation once again...
This is a large group of miners who have moved now to a new pool, I will likely have them move a few back to ninja though, as their pool is now dominating the network. We are just trying to get the power balanced out.
They are donating 2% to development, and 2% to the assets based on our other pools, so they aren't taking any coin away from the assets, and they're also helping to pay for development.
Having them all on ninja was making ninja too large, and since a lot of people didn't want to move from ninja, we just had them move to another pool.
I'll likely ask them to move a few miners back to ninja, and maybe a couple to a few other pools.
But... just so you know, it doesn't take away from your income, no matter what... you'll just get bigger payouts when you do get payouts as opposed to a bunch of smaller ones. The pool's number of blocks really makes no difference to your overall income.