Your right RT, it's not foolproof, and it's only a matter of time before a get a dickhead to ruin my night. If there is any problems, MyTaxi have an office and they accommodate you best they can. If you pick up a street job, you don't know who they are, or if they have money, and you have no comeback.
I like the added security of paying 12% for less hassle, although I would like if that amount was less.