I originally posted this on MSF, but it got no response, so at the suggestion made in a comment there, I'm reposting it here.
This should be called "up-votes", or something like that, showing a count ("1" in this case) instead of a value.
I'm not sure what should be done with down-votes. Perhaps the tab should say "votes" and show "+X -Y".
As it is it implies that reputation is awarded.