A 'selfie' the Prime Minister tweeted of his Ukraine crisis talks with Barack Obama has been widely mocked on the social network.
A resourceful advertising student is trying to get his foot up the career ladder with the help of a promoted tweet on Twitter.
Former footballer and broadcaster Stan Collymore is calling on Twitter to take action after being bombarded by racist abuse.
A 65-year-old man from Texas is hoping his equivalent to Ellen DeGeneres' Oscars selfie will become the most retweeted post on the social network site.
Terry Shipman had just five followers when he tweeted this picture with his two dogs:
Let's see if we can beat the Oscar re-tweets! http://t.co/hke2BbcUJb
It now has over 145,000 retweets - a long way from Ellen's three million record.
He told NBC's Today show: "I took that photograph, tweeted it to my son, then he and his roommate retweeted it a couple times, and then their phones started blowing up...I was just totally amazed. It was just kind of as a lark,” he said.
But now a cruise company from his hometown have offered him a holiday if he can reach 1.5 million retweets. They have also started the hashtag #sendterrytotheislands to get him there.
Terry also revealed: "I have to silence my phone because it’s just constantly going off.”
The social networking site Twitter has apologised after thousands of its users mistakenly received emails telling them to reset their passwords as their accounts may have been hacked.
The email, which went out early on Monday morning, said: “Twitter believes that your account may have been compromised by a website or service not associated with Twitter. We’ve reset your password to prevent accessing your account.”
A Twitter spokesperson told Recode.net: "We unintentionally sent some password reset notices tonight due to a system error. We apologise to the affected users for the inconvenience."
But users were not told about the exact reasons of the password reset on the accounts.
More than 14.7 million tweets about the Oscars were made around the world during the 86th Academy Awards ceremony, according to Twitter UK.
Host Ellen DeGeneres' star-studded selfie has now gained 2.4 million retweets and been favourited more than 1.1 million times, breaking the Twitter record.
The man behind a hugely popular 'overheard in the Goldman Sachs elevator' Twitter account has been outed as a 34-year-old Texan who has never worked for the firm.
#1: Teach a man to fish and he'll still vote for the guy that gave him a fish.
Tweeting to more than 600,000 followers, @GSElevator had been the subject of an internal inquiry at the Wall Street investment bank after appearing
"The stories aren’t Goldman Sachs in particular. It was about the culture in general,” said John Lefevre after revealing his identity to the New York Times.
He was speaking about a book deal signed on the back of the success of his Twitter account, which proved as popular with banking industry insiders as it did with outside observers.
As local councils call for Facebook and Twitter to display Neknominate warnings on the social media site, a fan of the drinking game tells ITV News some people are taking it too far, but for him it's "a bit of harmless fun".
The Local Government Association (LGA), which represents almost 400 councils in England and Wales, said social media operators such as Twitter and Facebook have a "responsibility" to display warnings over drinking craze Neknominate.
– Katie Hall, chair of the LGA's community wellbeing board
This is an utterly reckless and totally irresponsible craze which has tragically claimed lives. More should be done to highlight the dangers and persuade people not to participate.
We believe social media operators have a responsibility to provide health warnings to user groups and individuals.
The LGA is looking for these corporations to show leadership - and not ignore what is happening on their sites.
We are urging Facebook and Twitter executives to sit down with us and discuss a way forward which tackles this issue head-on.
Twitter and Facebook should introduce warnings over the drinking game Neknominate, which has been linked to several deaths, councils across England and Wales have said.
The Local Government Association said prominent messages were needed on the websites about the dangers of the craze, which involves people filming themselves downing alcohol, nominating someone to continue the game, and posting the video on social media sites.
Scientists are developing a lie detector which will be able to judge the truth and fiction of tweets, The Times reports. Universities across Europe are joining forces to build a system capable of analysing the truthfulness of posts on Twitter.
The new system, called Pheme, should be able to verify the authenticity of a Tweet within 140 characters. The makers believe the system would have been useful to police during the London riots of 2011 when false reports wasted police time.
Kalina Bontcheva, from the University of Sheffield, told The Times the lie detector would enable governments, emergency services, health agencies, journalists and companies to respond to falsehoods. She said:
People do believe things they hear on the internet. In critical situations, you can instead show reliable information or alert the authorities before things get out of hand.