Hi uvatbc, I'm aware that nokia has the ovi contacts app which i think is an excellent app although its not quite as good as bbm(at least not for the s60v3) its very useful, however, the smart phone market these days is no longer limited to a few brands and everyone has their preference of OS. With that said, what these (cnectd and whatsapp) apps are trying to do is to integrate the different MOBILE OS on to one unified app, they both already support andriod,symbian,blackberry and apple.
$ dig +short _xmpp-server._tcp.whatsapp.com SRV $
$ dig +short _xmpp-server._tcp.google.com SRV 20 0 5269 xmpp-server2.l.google.com. 20 0 5269 xmpp-server3.l.google.com. 20 0 5269 xmpp-server4.l.google.com. 5 0 5269 xmpp-server.l.google.com. 20 0 5269 xmpp-server1.l.google.com.