Specifically, I made the following comment on this recent answer:
@Eric: Most teams would not have the enthusiasm/bravery to do this, choosing instead to hide behind, "Sorry, can't, breaking change etc., it's broken forever." So thank you for having the courage to make a breaking-improvement!
It got a lot of upvotes (~80?), so at least one other person thought it was justified; but it was deleted by a mod (casperOne) for "being too chatty."
I know I enjoy the rare "thank you" when I help someone out - are these comments really not allowed?