I watch them closely. catch a lot to.
Saw $900 in earning dissappear a few months back when a player closed their account. Got that straightened out.
when I was hacked a few years back I happened to look at my stats and clicked over to my pmop and noticed the info was changed. The person opened an NT account and the AM had just entered the payment in the spreadsheet for payments. That little obession saved me from losing $1200.
There are a bunch more stats problems I discovered at one point or another with Betfred, Affiliatewide, Brightshare.