1. Texas senator Ted Cruz declares his bid for the presidency via Twitter (Katie Glueck & Alex Isenstadt / Politico)
2. President Obama invites social media into East Wing (Jeff Sneider & Lia Haberman / The Wrap)
3. Texas Rep. Villalba blocks student journalist on Twitter for asking him a question (Stephen Young / Dallas Observer)
4. Why Vance Jacobs started taking his audience behind the lens (Aleszu Bajak / Storybench)
5. On Twitter, local news is hard to find (Kenneth Olmstead / Pew Research)
6. Why online publications can live without Twitter (Simon Owens / The Next Web)
7. Can social media help to stop suicide? (Megan Moreno / Aeon)