Metrics, a news history project, Twitter, media censorship and more are found in this week’s Digital Media Mash Up, produced by the Center for International Media Assistance (CIMA).

Here are IJNet’s picks from this week’s stories:

Are social shares a good metric to judge journalism?

Sharing metrics have their share of flaws but offer unprecedented insights. Fortune

The new news business

For most of the 20th century, any list of America's wealthiest families would include quite a few publishers generally considered to be in the "news business." CNN Money

Block on YouTube in Pakistan challenged

Pakistan’s recent elections, which for the first time in the country’s history marked the transfer of power from one elected government to another, have been seen as an encouraging sign of democratic commitment. MLDI

Twitter not quicker than newswires on breaking news say researchers after studying 51 million tweets

Twitter is not set to replace traditional newswires as a source for breaking news, researchers have found. Press Gazette

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Image: “Facebook Button,” courtesy of birgerking with a Creative Commons license.