Buffalo's USB WiFi adapter boosts range 210%

via engadget

If your built-in WiFi antenna is less than phenomenal, or you're just looking to jack some WiFi from another country to avoid severe punishment, Buffalo's AirStation WLI-U2-SG54HP might be the answer. This USB 2.0 stick adapter operates like any vanilla 802.11b/g wireless LAN adornment, but ups the ante by suctioning to the rear of your display and reportedly boosting your reception capability by 210-percent. Granted, we're not sure where the firm is deriving this lofty figure, but it's probably safe to assume that strapping a relatively large antenna on the back of your lappie will persuade a few more far away signals to come your way than your factory-installed alternative. So if you're looking for a way to extend that range (legally), or just enjoy having a tethered weapon at your disposal at all times, Buffalo's WLI-U2-SG54HP can be snapped up next month for ¥3,700 ($31)

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its because of the antenna's, bleh.....
mine is small and can range up to 5 times farther than 802.11G and 650% faster.
mine is 802.11n :P