This is not a strictly enforced policy, but rather a request to all our forum members.
While some of us can speak and understand one's native language, whatever it may be, the majority of others most probably can not. And since this forum is presumed to be English by default - it may be considered rude by other people, if you post something they have trouble understanding. Don't be rude, being rude is bad - you won't be very popular
Please, respect your fellow forum members - try to use English in your posts as much as you can, and if you can't - use Google Translate or similar services to have your messages translated before you post them here.
Thank you for understanding and have a nice stay!