Hi. Quikcsy.im* has an interesting feature (and also a nice way to get funds), which consists in:
"Even if you are not a Quicksy user you can enter your Jabber ID into the Quicksy Directory and give Quicksy users the ability to automatically discover you based on your phone number. This lets you enjoy the privacy-friendly, federated nature of Jabber/XMPP while giving your less tech-savvy friends a low barrier entry into that world.
We charge a small fee (…)"
Why not add such a feature in kontalk?