[@Ellri] I am of the opinion that it should stay as "Like". It may be slightly ambiguous, but that allows it to fulfil a broad spectrum of related definitions. To further discretise the ratings system would introduce unnecessary clutter, and relabelling "Like" as "Approve" would remove a lot of the uses for that rating.

Besides, "Like" is familiar to people, from its use in other websites.

P.S. Ninja'd by Mahz.