It's a bit worthless. The amount of stars is the amount of thanks that have been given to a poster in that topic, in relation to the highest amount of thanks a post has ever given. So it doesn't actually show much at all, because the highest thanked post is at 18 thanks at the time of writing. check the thanks toplist .
For me, the test of whether any internet statement is insulting, trollish, childish, etc, is to imagine if the statement would have still been made face-to-face. A significant number of internet statements fail this test, and badly.