[chronogram]

Yes? Maybe you're right. It was intended to be a desperate plea at wanting readable English from generic English comments, therefore I did not include a question mark, as it was a plea. You might be right though!

[tyingq → chronogram]

You know why the "it's" mistake is common.

Edit: Because people get used to adding 's to indicate possession. I don't always do it, but it happens.

[chronogram → tyingq]

I can guess that people use speech over text, for text, other than that I do not know how it is common when it is so jarring.

[StavrosK → tyingq]

But nobody writes "he dropped he's ball" or "this is she's purse".