by Quade » Wed Feb 06, 2013 7:00 pm
My feeling is you're using the search tab so, the selected groups don't mean anything the way you're using them.
If you want groups to act as a filter, you have to add them to a topic ("unsorted" is a topic too) and then select the topic before you search from the first dropdown in the second line of the search tab. Even then, you might see posts from other groups because some posts appear in multiple groups and Newsbin is just displaying one of them.