I don't think anyone's said it yet, but... this is what an attorney is for. This website is stupid.

It's bad enough to trust any confidential information completely to a third party, let alone a website that could lose your information or go defunct in a few years. At least disclosures to attorneys are legally protected to the n-th degree, and the business is brick-and-mortar with a known location.

Add to that the fact that a regular e-mail is something that could easily be forgotten about, caught by a spam e-mail, lost when you switch accounts, etc. The problems with this idea are endless