<td>Jabber ID (JID), e.g. usr@a.b.c/home with "home" being a "resource", which distinguishes the same user when logged in from multiple locations (simultaneously)</td>
</tr>
<tr>
<td><strong>Interoperability:</strong></td>
<td>XMPP, LiveJournal, AIM</td>
</tr>
</table>
<p>To add someone using AIM to your GTalk account, add <strong><screenname>@aol.com</strong>. If their screen name is an email, add <strong><username>(<domain>)@aol.com</strong>. For example, to add bob@me.com use bob(me.com)@aol.com. Note that if your GTalk address and AIM screen name are the same, messages from your AIM contacts will be received by both.</p>
<p>Apart from using and being compatible with <ahref="Accounts-XMPP.html">XMPP</a>, Google Talk also has proprietary elements.</p>
<p>Note that "a Gmail account is required to use Google Talk or other download clients" (<aclass="ext_link"href="http://google.com/support/chat/bin/answer.py?hl=en&answer=159495">says Google</a>).</p>