Mashable explained earlier today how to use the new Hulu tags by giving an example using NBC’s “Community”:

Although Hulu’s search function is generally pretty solid, finding specific content if you don’t know an episode title or discovering new content can sometimes be difficult. Today, Hulu is going to make finding and discovering that much easier by adding support for site-wide tags.

Where tags really become useful is in discovering new content. For instance, clicking on the tag “college” on the page for NBC’s “Community” brings me to this listing:

I’m presented with movies, TV shows, and episode clips that have been given the tag “college” and I can drill down to exclude certain content (like if I only want to view full episodes and I want it of a certain TV show).