The short answer for me is that I will regret nothing. That's not to say there haven't been things in life which may be regrettable, but even those things drove me to seek God or a greater understanding of truth in that situation. The regrettable things (things I could feel regret for) are those which tend to make me most thankful when I actually stop and think about what's on the other side of them.
And I agree with Baryonoctet. I too try to use proper spelling, grammar and punctuation, but if I can understand what someone's trying to say it's usually fruitless to point out the flaws in what they've written. They're likely to make the same mistake over and over again and grammar police posting can become tedious.