I don't see anything wrong with it aslong as you don't overdo it and you be careful! I had my first one last weekend, after saying I never would, but it just happened and it was awsome, really exciting and fun! I dont think i would with a complete stranger though, this guy was someone I used to work with! But don't have a go at me because I have just came out of a 4 year relationship 2 months ago, and so this is the first time i have been able to experience anything like this! Obviously it doesn't compare to a relationship where u really like the person, nothing better than that, but it was fun none the less and I would do it again.