Bring on the corrections in a polite manner, I am not to fussed about being corrected as long as it isn't in an aggressive.
Although if it's anything to do with "to", "there" or "were, I cannot remember it, don't ask me why.
To me there all the same, if I use the wrong context does it make the whole sentence totally unreadable? No, so I see no problem really.
Yeah, I am pants on head retarded, what of it.
As for facts, I like to learn new things but if I came out with some really bizarre fact or shoot down a fact you think is right and nobody else knows then don't be surprised.
I am not saying I know everything but I watch QI way to much and read alot of bizarre facts.