Why can't I see presence for any of the users?
Only users participating in Openfire will have users visible in the community, and the community/Openfire integration must be correctly established to see presence for these users. Make sure that the integration is properly set up in the admin console.
Why is it when I click on "start chat," some other program other than my regular XMPP chat client appears?
This is happening because the browser you are using has not associated your XMPP chat client with the xmpp: URI. If you make the browser associate that program with the URI, it will open the next time you try to start to chat.
Is there an expected performance decrease on the Openfire server that should be planned for?
The community communicates with the Openfire server for providing presence, so you can expect more stress on that server. However, the community basically caches presence information and subscribes to updates (rather than requesting it from the Openfire server each time it's needed), so it should not be a significant amount of extra pressure.
Can you use other Jive Chat integrations with the Openfire integration?
No; only one presence integration may be used at a time. You must uninstall any existing Jive Enterprise chat presence integrations, and reset the SBS server, prior to installing the Openfire integration plugin.
What happens to users who don't have the client installed?
Those users won't be able to start chats with other users in the system, because the browser will not have associated the xmpp: URI with an XMPP chat client, which is responsible for starting chats between users.
What browsers support this?
The System Requirements describe support for browsers and chat clients.
Does this module honor profile privacy?
Yes it does; there is a privacy option for presence specifically which is in effect; username visibility is also respected.
Can I enable presence for specific users?
No. It's on or off globally.
The Google Chrome browser is asking me whether or not my site should be allowed to use Google Gears. What is this and should I allow it?
The chat bar uses local browser caching in the case of Google Chrome, so you should allow the site to use Google Gears. You must allow the site to use Google Gears if you wish to use the chat bar.
Why can't I see the chat bar in the Chrome browser?
Make sure that the Chrome is allowing your site to use Google Gears.