I am currently working on learning reviewing skills. I've come across the following situation, which I imagine must be extremely common on all the SE sites:
A new user writes an answer that would work better as a comment, but doesn't have enough rep to write a comment. Suppose that even though he hasn't written a full-fledged answer, it's still a useful contribution. For an example, see Correct usage of "awhile". It turns out that there's a special use of awhile found in the state of Pennsylvania. The new user (user132209) contributes a nice additional example of this, taken from his own experience. This would work great as a comment, but doesn't work well as an answer.
If you are a reviewer with a positive, welcoming approach, and a gentle style of providing constructive feedback, how do you recommend dealing with this?
In the example I cited, an experienced user provided constructive feedback by commenting
Hello 132. This doesn't add substantially to the accepted and other answer/s. When you have enough rep points, you can add comments (this would be a good one).
I find this pretty good, but I'm wondering if I can improve on this at all.
Does anyone have any good alternatives to share?