As long as you and everyone involved is of the age of majority and everyone is consenting, there is no reason why it's necessarily a "bad" thing. However, keep in mind these are strangers, and you are being vulnerable with them. While you hope it's anonymous, there may be ways they can record what you are doing, or if they want, try and track you down (though this scenario is much less likely). Honestly, if I were you, I would make the assumption it's quite possible for whatever I do to be broadcast on the internet. If you're okay with that, move forward. But if you have hesitations about what parts of yourself you are sharing with these people, you might want to reconsider it.