Thanks Dogboy and waxwing, but I haven't said that my English was bad. I meant that it's not fluent enough according to my standards of fluency, I also think that evaluating someone's fluency basing on what one writes on a forum is rather approximate. It indicates some skills, of course, but it doesn't give the idea about the easiness with which a person expresses himself in foreign language and that is the main component of fluency, IMHO.