I'm trying to use the Groups by Tag widget and it seems to be defaulting to an "or" behavior (find any Groups with *any* tag I've listed). Is there any way to make that be a "all tags" ("and") like you can in the Watch a Tag widget?
I dont have a specific answer. but you may try this out.
I think you can have a common tag word for all the groups/ for example, if you want to list all the groups that contains "eee" to be listed under the widget - edit widget and add eee as the only tag required. By ensuring all the groups you have created are tagged with this "eee" will assure all groups with this particular tag word will be displayed out here.