Facebook sneakily released a Slack competitor Ifeadi C. 08:50 Mashable, Zero Tech Blog Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsThank Walmart for this sale on Bose headphones: SoundSport wireless earbuds are $50 offThe US army will give startups who invent new weapons a cash prize6 tools every aspiring web developer should master12 kick-ass soccer movies to watch instead of the World CupSupreme Court rules police need a warrant to access a suspect's cellphone location data'Shitty Robots' creator Simone Giertz gets real about what it's like to recover from brain surgery