I don't necessarily disagree with the idea of services like this, but in order for the Certisfy Partner's certificate issuance to mean something, it can't just

I don't necessarily disagree with the idea of services like this, but in order for the Certisfy Partner's certificate issuance to mean something, it can't just be J. Random Noob who works out of the café down the road selling attested signatures for five bucks. The whole point of PKI is that I'm trusting a third party to perform verifications on my behalf--it rather defeats the purpose if the third party in question is no more trustworthy than the person requesting their attestation. That said, I find it interesting that a couple people on their partners list are Notaries Public--adding digital signature to the list of functions a Notary can perform would make the migration to digital signatures easier. It would probably require making the Notary's signature part of a public chain maintained and issued by the local government as part of their licensure, though, so I don't see where Certisfy comes into that picture at all.