News bites: Israel live-tweets assault

Ars Technica explains how Israel live-tweeted its military assault on Gaza.

Facebook stock jumped 13 percent even as 804 million shares by early investors became eligible for trading, The Wall Street Journal writes.

Texas Instruments is cutting 1,700 jobs as it winds down its mobile processor unit, according to Reuters.

A California regulator issued fines against transportation startups Uber, Lyft and SideCar, TechCrunch reports.