When I just started using couchsurfing, it was quite good, i met a few people with whom i am still in touch. Then i didnt use it for a while to my great surprise found out i was charged with a membership fee without my permission because age ago i verified it with paypal. It was too late to claim the refund as i found out the transaction accidentall only through my bank statement. In the sector about local advice loads of people discussed the safety issues regarding hosts, some people shared their negative experiences, quite soon all of that was removed leaving only questions about transportation dated months back. Loads of men without hesitation trying to use it as a dating site (that type of men would think that any socializing site is for them to find a girl for sex though), it is not safe to use especially if you travel alone.