It is used effectively. Of course, programmers being programmers, it's also used to point out errors and typos. I've also read a bunch of good comments about ch

It is used effectively. Of course, programmers being programmers, it's also used to point out errors and typos. I've also read a bunch of good comments about choosing clearer wording for some parts. If I was writing a blog (and I'll start one one of these days :P), I would definitely want free, crowd-sourced editing that way!