O'Reilly is using one of these Xirrus Wi-Fi arrays and so far, I've got to say I'm impressed. The bandwidth has been great with none of the traditional conference wi-fi problems we all have learned to live with The picture is of the operational array on the light truss in front of the stage. Looks much cooler in real life since all the lights are blinking! According to the Web site, the XS16, which is what we've got here, can deliver up to 864Mbps of bandwidth. Very cool.