Perhaps. What do you want exactly? In ClipShare now, you must be a member to vote and currently the math for votes takes an average of votes and converts to stars. The math is not ideal and could be improved.
With thumbs up vs. thumbs down, the math is easier. You just get a graphic with the number of up and down votes and a slider colored graph.
ClipShare does not offer voting for non-members. The reason is that anyone could vote multiple times and skew the value of a video.