This is the address they used to pay me: 1LMuZC5vxMmd46LGxE7UFKAkY69DcaAzsD
It is part of their hot wallet and part of the chain.
Slowed down by every link in the chain being separated by 10 minutes (for the block confirmation). It is a fairly odd system to use but it does sort of work for them.
Once it gets to a certain point, it'll probably get replenished.
Good god, trying to do a blockchain analysis on them would probably take a decade. They sure do seem to move things around quite a bit.