i have accepted invitations and asked for invitations normally if i see any point of coincidence in my very subjective opinion regarding language, geographical procedence irrespective of age or sex. if that person doesn't contact anymore or leave messages with subjects i consider not adequate to chat with because you don't speak with everybody about any subject, i delete it. To the time being, my success in language or linguistic exchange is null. i also ask questions to see what's the feed back but results are also low. lately i started writting opinions on people demands to see if it promotes me as the reader can have a bit of vision of what crosses my mind or my personality. anyway, no great results. as the majority of users are very young i use this to have a bit of sociological vision of what are the preocupations of young all around the world and sometimes i really get surprised. if you have notions of mass comunications, anthropology and the like which is my case, you can read a bit between lines. by now, my analisis is that this place is full of narcisistic (onanistic) youngs embebbed in all sorts of capitalistic notions, and the word cooperation i suppose has not much meaning to them or have not an approximative notion of it. so if you want to learn a language better look for a good manual. if your interest go a bit further in knowing what ideas habitate this world, this place is more interesting than other chat rooms where scopes are more specific from the first. of course, as i only can speak about my interactions, this view is very partial in the sense i only see a very reduced part of the whole. but for language learning i guess, having a look on the questions board, i am not too far from reality. good luck.