Vote up names you like, vote down names you don't. Whether or not the title will actually be changed is determined with a different kind of crowner (the Single Proposition crowner). This one just collects and ranks alternative titles.
Keep - Klingons and Star Trek are well known enough outside the fandom. (Er, I might have gotten confused as to whether this is for the current page or the reworked version - Keep intended for the reworked version.)