Hello, I am a big xkcd fan.
 My introduction as xkcd fan
 I'm not a native English speaker
...and I don't like "typos". So much THANKS for helping on this issue or even more importantly: Wrong grammar <-I don't like these errors I don't see.
As a German native speaker I had to learn something like "Oxford English" in school, and I hated it. My knowledge about the (American, British, more...) English language mostly belongs to later experiences. International contacts, science (especially physics), programming (Randall does not know how funny IBM's translations for German are - "Copy from to" becomes "Copy until") in German, AND the main language on the Internet is, of course, English.
Also I was even bad on the German language sessions at school. But that's just another story.
I'm happy about corrections on my typos and grammar, but on essential content I will discuss.