An explamnation for [e-mail]

[teach]

ENGLISH ONLY means English only.

There are hundreds of boards where you can use Polish.

[radiohed]

hey, let's all try an grow up a little.

And remember:

"Discussions, debates and conversations - all topics of conversation are
welcome as long as they are in English :-)"

The prepostition "in" means just that! It doesn't have the same meaning
as "about".

[nyo]

I fully agree.