<div dir="ltr"><a href="http://www.bbc.co.uk/news/technology-20237531">http://www.bbc.co.uk/news/technology-20237531</a><br><br>The words "four more years", coupled with a photo of Barack and Michelle Obama embraced in a hug, have become the most retweeted Twitter post ever.<br>
<br>Fahd<br></div>