Add more IM types

Currently, I can only see AIM, ICQ, MSN and XMPP as IM type labels in the web interface. It would be great if you would add more of the regular IM types, even if they may be "compatible" with some of the listed ones. Or maybe you have excluded the IMs which are based on a mail service, like Gmail/Gtalk, Yahoo, Hotmail/Live, etc? If so, it would make sense to list them (the email addresses) also under IM.