I don't think you can put it on the user tab, but you can put users on the map.
I actually succeeded in setting this up, but it's been too long for me to remember exactly what I did. However, I do remember that when you're playing around with it, remember to clear your browse cache everytime you try something. Otherwise, you get bad XML data in the cache and it doesn't clear on refresh, at least in Internet Explorer. Also, the author gives a URL that cause the XML data to be generated over again. Assign that to a menu button so that you don't end up downloading bad xml data over and over again. This xml file is cached so that it doesn't have to be remade by the server in its entirety with each page request. Good idea, but it really complicates troubleshooting the set up.
My strategy was
1. make a change.
2. regenerate the xml file
3. clear the cache
4. refresh the page.
Finally it worked and I could get users to show up. But.....no one wants to give out their address on the net. So......unless your users are business people or businesses who WANT to give an address, don't count on getting much data.
Raj