From the Globe and Mail (Dec. 24):

Torontonians are totally tethered to Twitter. Canada's largest city is the Twitter capital of the Great White North and home to one of the largest collections of Twitter users in the world, according to a new report from market tracking firm HubSpot Inc. Toronto places eighth on a list of the Top 30 locations on Twitter, based on the supplied biographical information of Twitter users - including what they list as a place of residence - while Canada ranks No. 13. London tops the list, followed by the United States generally, then San Francisco, New York and Chicago.

This stub of an article noted that Twitter's user base expanded by 600 per cent during 2008.