This seems like a potentially useful app but I don't see how I get started using it. I don't want to start inviting everyone I know. I still need Skype, Basecam

This seems like a potentially useful app but I don't see how I get started using it. I don't want to start inviting everyone I know. I still need Skype, Basecamp and email running while I work as well. I still need whatsapp, viber, Facebook & Google hangouts on my phone + sms and regular calling on my phone. Everyone seems to have a different way of contacting me. If this could be an sms or email client or if it could pull in 2-3 of those services I might start using it. Seems nicer than most of them. For now I'm just hoping I don't have 2-3 people that want to fleep me instead of Skype. I have enough places I can accidentally overlook a bit of text from someone I know.