Free WiFi is great, but watch out for WiMax

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If you’re looking for a reason to move to San Francisco, look no further than the fact that free Wi-Fi service is about to rain down on the city, courtesy of Google, Earthlink and the advertisers they get to foot the bill.  The deal is nearly nine months in the works, and it ain’t over till it’s over, but now that the ink is being readied, San Franciscans could see their numbers swell. But not if WiMax is on the agenda. Trials of this “Wi-Fi on speed” in Sweden have laid some denizens low, with symptoms ranging from headaches and wooziness to losing their smorgasbords.

—Posted by Laura Blum