Good Tweets

http://www.adweek.com/socialtimes/the-perfect-tweet/447086

http://blog.hubspot.com/marketing/tweet-formulas-to-get-you-started-on-twitter

http://www.prnewswire.com/knowledge-center/Mastering-the-Art-of-Writing-a-Good-Tweet-to-Promote-Your-News.html