I notice these things too but I'd be a total 'Korintenkacker' to even mention it. Tolerance for god's sake - what's so difficult about it? There are so few mistakes, except for mixing AE und BE and maybe some grammar parts which also happen to people with English mothertongue. So this is really kinda sad, when comments go beyond advice into just being smart-assed. Sorry, I needed to let it out. That makes me sad and fills authors with low self-confidence.