1) Don't use them much except in and out of airport. However, had bad experience with an $$$$$$$$ (as told by the driver himself...tried to run away with my bag) and an ************ (asked for more than the amount on meter as tip to provide better living for his 7-8 kids back home. I only asked him why so many if you cant afford. I walked out without being asked the second time).

2) They know the route, never had to direct them but some did try to use the long route only to be denied by me.
3) NA
4) Dont know.
5) Not in the list ...:)
6)Refer 2.
7) Just OK...for 10-15 minutes I am not looking for former.