Along with sunchild's feedback, I would also say that selecting an item from the dropdown should tokenize it (it has been selected after all!).<p>Also just a side note from my own experience, I have found modular input boxes to cause cognitive friction for users in almost all cases except adding "cc" and "bcc" users to messaging systems. Otherwise, it seems to slow people down when using...at least from my tests. This guy <a href="http://www.ryancramer.com/journal/entries/select_multiple/" rel="nofollow">http://www.ryancramer.com/journal/entries/select_multiple/</a> gives a pretty good walk-through of my own findings.<p>I personally have found that this library <a href="http://www.suumit.com/projects/bsmSelect/examples/index.html" rel="nofollow">http://www.suumit.com/projects/bsmSelect/examples/index.html</a> (in particular example # 5) along with actually animating the "fly ins" of the tokens, to be very obvious to the majority of users when a small number of multiple selects are needed.