I have recently (within the space of a few days) received two reps (on the same thread) without a message, which is unusual since all my previous rep points for some months have included messages. What's more, one of the posts repped was not (in my view) particularly rep-worthy.
Have others been experiencing the same thing? If so, I suspect that some random and indiscriminatory rep-awarding may be going on ...
Or maybe I'm just reading too much into it.