http://blogs.technet.com/b/hameroff/archive/2011/07/09/exchangepartner-the-latest-trend-in-the-exchange-partner-ecosystem.aspxHashtags, as defined by our friends in the Twitterverse , are “used to mark keywords or topics in a Tweet.” Others, like hashtags.org , add that hashtags “are a community-driven convention for adding additional context and metadata to your tweets.” Ien-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)