An instant messaging handle. Includes both an address and its protocol.
The protocol value is either a standard IM scheme or a URL identifying the
IM network for the protocol. Possible values include:
Value Description
sip SIP/SIMPLE
unknown Unknown or unspecified
xmpp XMPP/Jabber
http://aim.com/ AIM
http://icq.com/ ICQ
http://talk.google.com/ Google Talk
http://messenger.msn.com/ MSN Messenger
http://messenger.yahoo.com/ Yahoo Messenger
http://sametime.com/ Lotus Sametime
http://gadu-gadu.pl/ Gadu-Gadu
This is the gd:im element. In XML output, the address and protocol are
provided as the address and protocol attributes, respectively. See:
http://code.google.com/apis/gdata/common-elements.html#gdIm
Serializes to '<protocol> <address>'. Raises BadValueError if tag is not a
standard IM scheme or a URL.