They seem legit, I did talk to the founder of that website, and she does seem legit. I did suggest to them to reach out to someone trusted here to do some sort of escrow so that forum members and they can collaborate in block parties. I think CK is a good option (not sure if he's willing to do that but he's trusted by both parties), Willi is a perfect candidate for that (will be hard for them to trust him since they don't know much about the forum)

The idea I had in mind is that there could be some way to share hashrate to one address while payouts are managed by the pool itself. Not to make the suggestion too complicated on the code level, the rewards can then be shared between their main address and bitcointalk address (could be controlled by 3 forum members like Willi, Phill and someone else maybe NFW).

Something like this

BTCaddress.workername (their own)
BTCaddress.workername (bitcointalk address)

Payment is split between those based on hashrate, they do their own distribution, and the forum folks do their own.