Canadians have definitely taken to social networking. “Some 17 million have a Facebook profile, 4.5 million are on MySpace, 14.5 million visit YouTube every month, and 3.6 million upload photos to the sharing site Flickr.com,” the Toronto Globe & Mail reports. It doesn’t even mention home-grown Nexopia, based in Edmonton, with about 1.4 million users. The Globe & Mail article (and accompanying Q&A with readers) is about privacy concerns regardless of users’ ages (“social networkers shape their identity with these sites, essentially broadcasting their public image around the world”), pointing to a problem social sites are dealing with wherever their users are: “Many social-networking sites have privacy systems in place, but many users ignore them, only to find out – too late – that they shouldn’t have left their photos, blog postings and personal information available for anyone to discover.” Here are Part 2, “When a widget attacks your profile,” and Part 3, “Underage kids flock to social networks.” South of the border, an article in the Kansas City Star suggests this “public explosion in self-documentation” is a generational thing. Is it?