This discussion reminded me of a funny quip[1]:
<TimStarling> what does +1 mean anyway? <Brooke> Reviewer has a working mouse.
But if other people find them useful (like Amir explained) I don't see any problem with using +1 liberally :)
[1] https://tools.wmflabs.org/bash/quip/AU7VVae36snAnmqnK_xL
-- Legoktm