Couple of new things in

Some basic things. The category page was getting a bit stale..people who get popular tend to stay popular, so I added in one for the newbies, a set of tabs, one of which lists the most recent 30 cards to join. And to balance it a bit, top 30 most popular regardless of category.

Also have mouseovers for titles, some people liked to just have an image with no title, hopefully the mouseover will give a bit more detail (doesn't work in the widget, only in browsing).