They've filed for a preposterous (because trivial) patent on this. Multisig escrow isn't new, and keeping a timestamped log of evidence isn't either, and there are far better distributed logs than the centralised one proposed by Coinsigner, such as virtual-notary.org and lots of others. I'm in favour of doing something like this, in fact I've proposed it myself, but as a distributed service, possibly a new protocol layered on top of Bitcoin.

I call on everybody to boycot this site. Trivial patents like this are essentially a land grab, or theft of other people's potential productivity. It's disgusting.