Lunch was the worst. Seven of my friends could pester me at once.

It's still a close race on this point, but Android edges ahead with the ability to turn your handset into a Wi-Fi hotspot that can deliver wireless to you and seven of your closest friends.

The keenest social-network users, Australians, spent over seven hours a month on such sites, “poking” friends and “twittering” in late 2009, twice as much as users in Japan.