Had several GFs who dug it, some like the power play thing, some because it brings a harder orgasm, others both.
Trick is, as roger said, make sure you have a very clear STOP signal.
Great book call ?SM 101? anyone starting to play in the dark side should read this first. Covers safety, psychology and general kinky stuff.
Read it, It will change your life
http://www.amazon.com/exec/obidos/tg...46408?v=glance
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