Microblogging Paid Search SMS Social Networking 
Firebelly
JUNE 11, 2010
Twitter to Change Links and How They Are Displayed By Ben Parr In an effort to bypass the obscurity of shortened links and to prevent malware and phishing attacks, Twitter has begun the rollout of t.co, its official URL shortener, along with some major changes to how the microblogging platform handles links.
Techipedia: Tamar Weinberg
JANUARY 5, 2009
Social Media Sites: General The Big Boys of Social Bookmarking: The Top 20 Sites (10e20): Chris Winfield ranks the top 20 social bookmarking sites by their Alexa rankings and gives a short description of what each does — in case you haven’t ventured beyond Digg. What are the most popular sites in these age groups?
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