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USB ports can deliver either 100 mA or 500 mA. The device connects drawing only 100 mA and then negotiates for 500 mA if it needs more than 100 mA. That can be denied. Since the USB light is no proper USB device it cannot negotiate at all and simply draws more than 100 mA. As a battery device it is unlikely that the iLiad is built to deliver more than 100 mA. It obviously has no over current protection so it is entirely possible that these lights can harm the iLiad. It is entirely dependent of the electrical design of the iLiad so only the iRex techs know. They have probably designed it to withstand some abuse, but you never know.
In the end promoting such shitty abuses of the USB spec like USB lights or fans or coffee warmers can only lead to dead computers. They sell you a $5 item which can kill a $2000 computer. And what for? I can get a real big fan for $30 which is not even crap from China. A proper coffee machine costs $20. A clip-on light for my bed is not really costly either.
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