Likehacker, the make-life-more-efficient website, has come up with a really creative use of tags. We’re used to using tags to see content about a particular thing; Lifehacker have introduced the concept of using tags to avoid a particular thing. For instance their “politics and election free” feed uses tags to provide a feed of their content without the political stuff. Using the “not:” operator they are enabling readers to compile feeds that exclude the stuff they are not interested in. Great idea, explained in more detail here.