Are you aware that there is at least the version 3.0.14?
Can you explain which information you expect? So far you already know "who" they are since you can see the user agents and their IP address (click on the "Who is online" header, then click "Display guests").
It's a nice catchphrase but it can backfire: once it's broke, you're on your own! 3.0.x support is only offered for upgrading to 3.2