Option to exclude certain categories?

widget settings and Limit to Category

Right, I understand how to use the “Limit to Category” option. But that only let’s me choose which categories I want to INCLUDE. Instead, I want the ability to EXCLUDE based on category.

For example: “show all posts EXCEPT for posts in the “Foo” category“

widget settings, Limit to Taxonomy and

category=-1

1 – category id

OK, so I have a question then:

So the - (minus) symbol will EXCLUDE posts within that category?

- + category id

??

Works perfect. Thanks! Ended up using it to omit posts with a certain tag:

post_tag=-141