Twitter changes strategy in battle against internet 'trolls'

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Facebook (NYSE: FB) Delayed: 45.70 +0.19 (0.42%)
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Open $45.65    52 Week Low $89.37 
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Day Low $45.65    EPS $0.59 
Volume 579       

Twitter, Inc. (NYSE: TWTR) Delayed: 53.70 --0 (-0%)
Previous Close $53.70    52 Week High $26.70 
Open $0.30    52 Week Low $13.73 
Day High $53.70    P/E N/A 
Day Low $53.70    EPS $-0.18 
Volume 100,000