DocuSign, a bit creepy.

It's almost too easy to sign in 40 different places in a gigantic contract. DocuSign is pretty neat, and it allows for nearly immediate contract agreement. But it seems odd that something like that can be binding. But in any case, I've got the contract from the sellers and now everyone is fully committed to the deal, I just have to get the bank to give me money at a decent rate and not want to rake me over the coals.