The Ticker: Romney makes it official; Longform journalism; Shareholder changes; Facebook phone; China’s Twitter

Washington Post: Mitt Romney to officially clinch Republican nomination Tuesday

Adweek: Amid Tweets and Slide Shows, the Longform Still Thrives

Slate: Why Are Two-Class Shareholder Agreements Proliferating?

PC Magazine: Facebook Doesn’t Need to Make a Phone

Global Post: China cracks down on Twitter-like website, asks users to sign contract