I'm groofing around for few months and didn't read single criticism that mtgox or mybitcoin are closed source. Or even Flattr, service for opensource project donations. All three are handling your money, but mining server do not keep any large amounts and you can even calculate that it does not hide money (in mtgox and mybitcoin and flattr you can check this only by 'run the bank'). Personally I'm surprised why suddenly everybody care in opensource pool _service_. This is internet service like thousands others. Please don't flood discussion about open/close source in this thread, it should be discussion about service and it's support for pool users. My reason for close source is _exactly_ the same as for mtgox, mybitcoin and flattr projects.
+1