The best stories across the web on media and technology, curated by Lily Leung.

1.Twitter acquires shortform blogging company Posterous (The Next Web)

2. Yahoo sues Facebook over patent infringement (Inside Facebook)

3. NYT editor talks future of news at SXSW (Huffington Post)

4. Retailers, once dependent on newspapers, have transformed themselves into publishers (Newsosaur)

5. Brands from Nike to The Onion unveil Facebook timeline apps (Online Media Daily)

6. Exposé is a bookmarklet that shows top stories decided by your friends (Nieman Lab)

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