Just before I headed out of San Francisco at the end of Macworld | iWorld last week, I met up with a few of the guys from BearExtender, who make an impressive product that will boost the Wi-Fi signal coming into your Mac. The guys were in San Francisco to show off the BearExtender Mini, which will eventually replace the current product. The reason it will replace the standard BearExtender (so named, by the way, because it was developed for dorms at the University of California Berkeley, where the network is in fact called AirBears) is that it's just better. The standard Bear Extender runs at 700 milliwatts, where the mini is about half the size of the original product, an