If you often find yourself on the road with a wireless-equipped laptop or smartphone, you probably spend a fair amount of your time parked at Wi-Fi hotspots. While there are lots of hotspots out there, they don't exactly provide blanket coverage, so finding one wherever you happen to be isn't always easy.

However, in any given location, chances are that personal Wi-Fi networks outnumber hotspots. So wouldn't it be nice if some of those private networks were made available for use by people who need Internet access?

Now they can. This year has seen the debut of several products designed to let people share access to their Wi-Fi networks with others, effectively turning them into hotspots. FON, WeFi, and Whisher are three firms that have recently entered the Wi-Fi sharing market (or are arguably in the process of creating it).
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