Modern usages of the words tweet, fascinator and pay day loan are all among a host of new additions to the Oxford English Dictionary.
Twitter has put together a map showing the location of every geotagged tweet sent since 2009.
A High Court judge ruled that a tweet written by Sally Bercow about Lord McAlpine was libellous.
The number of adults accessing the internet every day in Great Britain more than doubled between 2006 and 2012, from 16 million to 33 million, according to the Office for National Statistics.
A recent growth in social networking has been one of the most significant changes to the ways in which individuals communicate over the Internet.
In 2012, almost half of all adults (48%) used social networking sites such as Facebook and Twitter.
Liberal Democrat and Conservative MPs have taken to Twitter to blast Ed Miliband after his bid to regain the upper hand in the benefits debate by pledging to cap the overall welfare bill:
When Ed Miliband says he wants to cap the overall welfare bill does he mean people in need get nothing when the money runs out?From @iswales on Twitter:
Tax avoidance today, child benefit U-turn yesterday. Labour only stay the same when it comes to more borrowing and more debt.From @SamGyimah on Twitter:
Lord McAlpine's lawyer said Sally Bercow "must now accept" that her tweet about the Conservative peer was defamatory after the High Court ruled it was libellous.
Andrew Reid of RMPI Solicitors said:
The apologies previously received from Mrs Bercow did not concede that her tweet was defamatory. Clearly she must now accept this fact.
The failure of Mrs Bercow to admit that her tweet was defamatory caused considerable unnecessary pain and suffering to Lord McAlpine and his family over the past six months.
Mr Justice Tugendhat's judgement is one of great public interest and provides both a warning to, and guidance for, people who use social media.
The High Court judge who ruled a tweet by Sally Bercow about Lord McAlpine was libellous said her followers - who numbered 56,000 - would likely know by the time of her post the elements of the story told on Newsnight.
"In my judgement, the reasonable reader would understand the words 'innocent face' as being insincere and ironical", Mr Justice Tugendhat said.
"There is no sensible reason for including those words in the tweet if they are to be taken as meaning that the defendant simply wants to know the answer to a factual question".
The reader would reasonably infer that Mrs Bercow had provided "the last piece in the jigsaw".
Her tweet, by implication, was a repetition of the accusation with the addition of the name which had previously been omitted.
"It is an allegation of guilt. I see no room on these facts for any less serious meaning", the judge said.
Sally Bercow said the High Court's ruling that her tweet about Lord McAlpine was libellous "should be seen as a warning to all social media users".
Mrs Bercow said in a statement that she did not write the tweet "with malice" and "did not intend to libel" the Conservative peer.
– A statement by Sally Bercow
I was being conversational and mischievous, as was so often my style on Twitter.
I very much regret my tweet, and I promptly apologised publicly and privately to Lord McAlpine for the distress I caused him. I also made two offers of compensation.
Lord McAlpine issued proceedings and the last few months have been a nightmare. I am sure he has found it as stressful as I have. Litigation is not a pleasant experience for anyone.
Sally Bercow said she has "accepted an earlier offer" made by Lord McAlpine's lawyers "to settle this matter" after the High Court ruled a tweet she wrote about the Conservative peer was libellous.
Sally Bercow said she was "surprised and disappointed" after the High Court ruled a tweet she wrote about Lord McAlpine was libellous.
Mrs Bercow added, "However, I will accept the ruling as the end of the matter. I remain sorry for the distress I have caused Lord McAlpine and I repeat my apologies".