AP Top Technology News At 1:52 p.m. EDT

Facebook launches video calls, group chat features.
Verizon Wireless nixing unlimited data for newbies.
Twitter comes to White House for Obama town hall.
TechBit: Iconic game ‘Civilization’ joins Facebook.
China’s Baidu, Microsoft to cooperate in search.
Budgeting for wireless data on Verizon’s new plans.
The apps that eat your wireless data.
Germany warns of Apple software security hole.
Netflix to stream movies, shows in Latin America.
Nokia abandons Japan market.