If you do a search on CafePress for the word “Jedi”, your search will come up empty, not a single entry. Considering the popularity of Star Wars, I find it hard to believe that no one in this great big internet has every tried to tag a Cafe Press design with the word.
Honestly, I could see using the tag “Jedi” on designs that have nothing to do with Star Wars just to bring searcher to my designs.
I assume that at some time in the past, George Lucas’s lawyers came a-calling and Cafe Press (wanting to stay in business) put “Jedi” at the top of the list of tags shopkeeppers are not allowed to use. I thought people should be warned. (By the way, I did not use the tag “jedi” myself otherwise, I am sure the store would be empty.)