We were discussing this on another thread and thought I would ask the question.
Most of the time I have just seen a filter but there was this pic of it dumping into the suction side of the turbo. What do you guys do? Pros and cons?

Pic of it dumping into suction side.

Nothing really wrong dumping it back into the intake stream, all factory turbo cars do this. You just miss out on the blow off valve venting noise, which is part of the fun of having a turbo car. Venting to atmosphere on a car with a factory ecu and mass air sensor can lead to stumbling in the idle due to the rapid change from boost to near vacuum.