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"While we may think of notifications as something that is primarily for mobile apps, they're also incredibly useful on full-fledged computers as well. One of the most popular solutions ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/10/03/new-version-of-growl-enters-the-mac-app-store-for-1-99/>