Fire up Google Maps to find out where to catch the bus, and it won't help much; dozens or hundreds of stops are displayed in the wrong locations, have the wrong bus lines associated with them, or aren't shown at all.
Try this mess at Brigham Circle, for example. You'll spend a long time waiting for the 39 on Tremont Street, yet that's where Google Maps now declares the 39 stops; the stop for the 39 on Huntington Avenue is gone.
Want to report that the stations or stops are in the wrong locations? Sorry, can't do that.