Hello, Does anyone know about a website where you can change your language(by teaching) to another one you want to learn, and this community portal helps to find each other.
I have done. The trouble is... some people (including myself) start off with the best of intentions and make initial contact then don't follow it up. There are a lot of Poles on that site and relatively few English people wanting to learn Polish.
Gumtree is probably better in terms of quality of contacts (sharedtalk has a chatroom facility if you just want to drop in). I've made a few local contacts and also speak to a few people in Poland via Skype.