I claimed my tokens via my FB login but about an hour later they were all transferred back to the address they came from can someone explain why that would happen?
Thats interesting - you should contact the official POW persons here.
Trust is also elementary for the success of POW itself, why they have to stabilize it and build mechanisms, which avoids any kind of cheating.
Generally Im staying very optimistic for this concept and hope, that the servers will get an upgrade in January before the bridge and increased public awareness with it.