* Yahoo (YHOO) slapped Facebook with a 19-page lawsuit over 10 patents covering a wide area, from advertising to messaging. Among the allegations: Facebook essentially ripped off its social networking technology, including the now-popular News Feed. (AllThingsD)

* Intel (INTC) is developing an Internet-based TV service that would be aimed at U.S. customers. (The Wall Street Journal)

* Twitter is acquiring Posterous, a blog platform with 15 million unique users, for an undisclosed amount. (CNET)

* DARPA director Regina Dugan is leaving her position with the Pentagon’s research arm to  take a senior executive job at Google (GOOG). (Wired)

* The biggest story to come out of South by Southwest so far? A project called “Homeless Hotspots,” which turned several homeless Austin-ites into mobile wireless 4G hot spots near the convention center. (CNNMoney)

* CNN is reportedly in advanced talks to acquire popular tech blog Mashable for a rumored $200 million. (Reuters)

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