SIP is the de facto protocol for VoIP these days. It's now 10 years old and there are many extensions to it, which have turned it into a complex beast which it not always easy to manage. Should we dump it?! Join me and let's go shopping to find the proper protocol for solving some of the SIP well known problems such as instant messaging and presence. We may find a better protocol, or a better way of doing things in SIP to give our users the proper communication experience with different media types, chat and availability (presence) while using Open Standards and Open Source Software.