On Mozillians, there is a lot of groups with only one person in it, which means we end up having a lot of groups which aren't really used. When navigating into the groups, it's not really easy to browse them because you have to hit "next" every so often (currently, we have something like 63 pages, which approximately means 1300 groups (there are 21 groups per page). It's not possible to browse all these pages, especially not when using the "next" and "prev" links. One solution could be to filter-out all the tiny groups and provide a tag cloud with all the groups with more than one element in them.
Improving group search as we intend to do in bug 973221 should resolve this.
Closing in favor of bug 973221.