In case you guys aren't following the widgets repository I am posting this here. A new widget is available that shows the categories in the forum.
Sidebar widgets don't show up to anonymous users?
Setting tooltips on widgets
Saving theme widgets produces false positives
Navigation in categories not working
Categories on Subdomains.
Global footer widget appearing before footers of other pages.
Everything(button etc..) in a category have the same color than the category background