I was impressed by this work over at the E46 M3 forum:
Personally I use the ol' slow over the crest of a hill or corner, accelerate if no cops in line of sight, repeat, procedure, and it has worked for me pretty well. Works great in a car like the M3 with gearing that scrubs off 10-15mph very quickly when letting off on an incline in 6th gear. It's actually a lot of fun on roads I know very well.
Then again I "drive to drive," I imagine someone who was a bit more distracted or less focused could really use the alerting of a detector.