The 7-port Manhattan USB hub (https://www.adafruit.com/products/961) mentioned in the Adafruit tutorial (http://learn.adafruit.com/piminer-raspberry-pi-bitcoin-miner/) only works with ~4 Block Erupters.

I'm still looking for a good hub for 6+ Block Erupters that works with Raspberry Pi (i.e. not USB 3.0)