Technology Links For 2009-06-20

Free tool for Gov’t agencies to communicate public safety alerts online or via SMS.
Who rules real-time search? A look at 11 contenders.
Twitter on the barricades: six lessons learned.
In-Depth: Comparing Tweetdeck and Seesmic.
Dramatic increase in number of Tor Clients from Iran.
Widgetizing the web: Widgetbox hits 500 million impressions a month.
In case of fire, do not use Twitter.
Study shows interaction with medical insurers costs $20-30 billion a year.