I voted Other–I don’t use them.
Usually I throw the damn things away. I twist the bag and tuck it under the produce. Or, I twist the bag and tie it in a slipknot.
If, however, I felt compelled to use a twist tie, I would tie it Clockwise.
Drives me nuts when I buy a bagged product and find the twist tie tightened counter-intuitively for me (clockwise to tighten is natural for me). Are there really that many southpaws out there sealing baggies?