When you read some of these questions does their grasp of the english language scare you?

Yes.

I'm surprised at the illiteracy of many of the questioners. People who don't know the difference between "their" and "they're." Between "its" and it's." Between "weather" and "whether." Between "to" and "too" and "two." And I'm concerned about many of the questioners' inability to even frame a question properly.

I give people whose native language isn't English a lot of latitude. They're communicating in their second (or third) language better than I could communicate in their first. But for those who are native English speakers: Yes, it does concern me.

terrifies me.

absolutely, completely, sincerely terrifies me.

'scare' would be the result of knowing that these are people who maybe have been out of school for a while.

the terror is knowing that most are students still in school...

and are our future teachers, lawyers, doctors...

(terrifying to the point that i don't need nail clippers. :)

It's been a while but yes, it does scare the hell out of me.

Your question is ambiguous. Is 'their' referring to the questions, or to some unmentioned authors of the questions? Perhaps you should brush up on your grammar and learn to avoid misplaced modifiers; before criticising others, who are doing their best to learn a difficult language.

It is more shocking than frightening to me.

Ain't it da truth??