NEW YORK (Reuters) - Facebook Inc and Twitter Inc have joined a network of over 30 news and technology companies to tackle fake news and improve the quality of information on social media, the group said on Tuesday.<div><a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=WFzT-obiq-E:0ehtTtxphcE:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?d=yIl2AUoC8zA" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=WFzT-obiq-E:0ehtTtxphcE:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=WFzT-obiq-E:0ehtTtxphcE:V_sGLiPBpWU" border="0" /></a> <a href="http://feeds.reuters.com/~ff/reuters/technologyNews?a=WFzT-obiq-E:0ehtTtxphcE:-BTjWOF_DHI"><img src="http://feeds.feedburner.com/~ff/reuters/technologyNews?i=WFzT-obiq-E:0ehtTtxphcE:-BTjWOF_DHI" border="0" /></a></div><img src="http://feeds.feedburner.com/~r/reuters/technologyNews/~4/WFzT-obiq-E" height="1" width="1" alt="" />