There seems to be a small bug. When pasting links, HN removes apostrophes. This is often problematic when copying-pasting links from Wikipedia.

For example, the following link: http://en.wikipedia.org/wiki/Somebody_Elses_Problem.

It's supposed to have an apostrophe in the word "Else's", that's how it is when it's first written. But HN removes the apostrophe.