A Star System would only be semi-meaningful if it had the number of voters on it.
But a better system would be an "UP" or "DOWN" thumb's rating. People either "LIKE" it or "DON'T LIKE" a profile. And if a number of voters is next to it with a percentage of "LIKES" then it becomes meaningful as you get more voters.
Urban Spoon does this and I find their ratings actually spot on to choosing good restaurants. It's HARD to get 9 out of 10 people to agree on anything, so when 90 out of 100 say they like this Chinese Food place, it's probably very good, most often is excellent.
I bet that will translate to profiles well, and is MUCH easier to vote on. HOW do you pick a 1, 2, 3, 4, or 5 star? What is that even based on?!? There is NO MODEL for basing such a rating, and so it's very meaningless.
But "LIKE"? We all unhesitant that, and can vote quickly, where as having to choose between the number of stars may make people NOT vote due to the indecision. I know I haven't because of it.