Hack pokazuje osoby będące online na forum przez ostatnie X godzin.
Opis z vbulletin.org:

Features:
-Show how many users (members + guests) visited forum in last x hours
-Show members listing
-Show member last activity on mouse-over
-Invisible members are shown as "Invisible" for those who has no permissions to view them
-Option to add fake guests
-Optionally usergroups legend can be shown below VILXH box
-By default all usergroups where HTML tags are filled out will be listed in legend
-You can exclude usergroups from showing in legend
-You can exclude usergroups from viewing VILXH


Installation:
1. Import XML file (as product) - AdminCP > Plugin System > Manage Products > [Add/Import Product]

2. OPTIONAL (For customized styles where VILXH is not shown automatically):
-In FORUMHOME template add "$cyb_vilxh" after:
<div>$activeusers</div>
</div>
</td>
</tr>
</tbody>


Versions:
v1.0 - Oct 02. 2005.
-Initial release
v1.5 - Apr 25. 2006.
-Known bugs fixed
-Compatibility improved
v1.6 - Apr 25. 2006.
-Compatibility improved
-New: Usergroup legend
v1.7 - Aug 04. 2006.
-Release of this hack for vB v3.6
v1.8 - Aug 05. 2006.
-Uncached template bug fixed
v1.9 - Aug 14. 2006.
-Added last activity info on mouseover (format: date, time)
-Users who have chosen to be invisible while online will be shown as "Invisible" for those who has no permissions to view invisible members
-You can customize "Invisible" phrase or replace it with some icon or something in ACP (HTML)
-Last activity info will be shown for invisible members too when you mouse over "Invisible"
v2.0 - Oct 30. 2006.
-Whole code is now valid XHTML 1.0 Transitional
-Added option to exclude usergroups from viewing VILXH box
-Added option to hide usergroups from showing in legend
-Added "Product Version Checking"
v2.1 - Sep 17. 2007.
-New: Number of guests who visited forums in last x hours
-Option to add fake guests
-Option to disable automatic placement of VILXH box on forumhome
-Last activity info shown using today/yesterday for current and previous day
-Several minor bugs fixed
-Optimized and compatibility improved
v2.2 - Sep 25. 2007.
-Only selected usergroups are shown in the Usergroup Legend
-Usergroups with no HTML tags set are still automatically excluded
-You can choose the order of the usergroups in the legend
-Fixed bug where users are not displayed using tags from their default usergroup
v2.3 - Oct 23. 2007.
-New: Option to disable guest stats
-New: Option to hide completely invisible members
-New: Cut-off member list and show all on user request via AJAX
-Minor bug fixes

Screen: