Tszabo, If you’re looking to sign documents online you might also want to checkout this new plugin I came across called WP Digital E-Signature. I spoke to them a couple days ago and they said they will be launching in the few weeks. So far it looks better than anything I’ve been able to find. They said they weren’t going to be charging monthly fees (which is always a plus). 😉
Hope that helps.
http://www.approveme.me/wp-digital-e-signature
