Just tested out a couple of 10M (33’) active USB extension cables with my PS3Eye and Kinect. The work like a charm; even with both cables in series (20M, 66’) both cameras work great - the PS3Eye running 640x480 @75FPS. Cheap too, less than 14 bucks apiece:
http://www.amazon.com/gp/product/B002VG39BI
If I have any problems I’ll update this thread.