NOTE: This is roughly obsolete, but may be helpful for historical purposes later. The issue is covered more precisely in ClientIssues (though no mention of clients that do support jabber:iq:gateway is made - may want to add that eventually).

We need jabber:iq:gateway (XEP-0100) support in the user's XMPP client in order to get the full benefits of Cheogram.

Is the user likely to have this? Here's a survey (see also some historical details, summarized below):