Well, such mechanism exist in Badoo. I am not sure if it present in US and West Europe, but it's present in East Europe. Beside classic like/dislike/match ther

Well, such mechanism exist in Badoo. I am not sure if it present in US and West Europe, but it's present in East Europe. Beside classic like/dislike/match there is possibility to look who is around and directly message person. Depending how person is popular it could be free to start conversation or you will have to use "coins".