Twitter saw its shares hammered after reporting quarterly results that largely met expectations but failed to allay concerns about growth of the messaging platform.
Twitter sued the US government, claiming its free speech rights are being violated by restrictions on its ability to disclose numbers of secret orders.
Internet hackers briefly took over an Israeli army Twitter account, the military said, posting an alarming message that a nuclear facility had been hit by rocket fire.
Twitter announced that it has cut a deal to buy mobile ad firm Tap Commerce to bolster money-making tools at the popular one-to-many messaging service.
Social media users tore into Barack Obama on Friday after the US president was seen chewing gum during solemn ceremonies to mark the 70th anniversary of the D-Day landings.