I hope that some of you have already heard for a Nicenet classroom. The first I heard about this was during my studies at the University of Oregon. It is a great virtual classroom where your students can develop and improve many skills (e.g. writing, grammar, speaking, listening and so on). I tried it with my students and I can say that my students were very delighted and they built their self-confidence.
If you want to try this virtual classroom, here is the address: www.nicenet.org/.
I am willing to give you additional explanations.