Head problems produced by users for the internet dating sites Tinder (more than fifty mil questionnaires). Badoo (on 226 mil questionnaires). Mamba (5.step three million questionnaires). TopFace (more than 131 million forms). (3.6 mil forms). Polovinka (on the 1 million surveys). Ruruto (about several billion profiles). Tinder web site Tinder are a cellular app you […]