VIDEO: Confronting an internet troll
Panorama's Declan Lawn confronts a man who uses the internet to post offensive comments.

VIDEO: Sending news from Afghanistan
BBC Scotland's Cameron Buttle shows how a news team broadcasts from a British army base in Afghanistan.

VIDEO: Eye-tracking helps advertisers
Developments in eye-tracking technology are helping advertisers predict what products will appeal to customers.

VIDEO: Cher Lloyd: 'I'm scared of cyberbullies'
Pop singer Cher Lloyd tells Panorama's Declan Lawn about being cyberbullied and her fears for her family's safety.

VIDEO: 'Flying people' and other tech news
Is it a bird? Is it a plane? No, it's a remote-controlled man-shaped plane. This and more in this week's tech news.

VIDEO: The untraceable 'dark web'
Out of reach of regular internet searches is the secretive online world known as the 'dark web' where you can shop for illegal goods, and where customers go by code names.

AUDIO: 'Great excitement' at Facebook IPO
Tim Bajarin market analyst at Creative Strategies Inc in California gives the reaction from Silicon Valley as Facebook launches its plan to sell shares in the company for the first time.

AUDIO: The making of Star Wars Uncut
A directors-cut of a fan-made version of Star Wars has recently been released, rapidly becoming an online hit.

VIDEO: Facebook reveals 'new information'
BBC Technology Correspondent Rory Cellan-Jones discusses what the public has learned about Facebook as a result of the company's decision to sell shares.

AUDIO: TripAdvisor 'is about common sense'
TripAdvisor's Emma Shaw defends the website against criticisms from the Advertising Standards Authority.

VIDEO: TripAdvisor rapped over 'trust' claims
TripAdvisor has been ordered to rewrite some of its marketing claims by the UK's Advertising Standards Authority.

VIDEO: Pinball wizard shows off museum
The BBC's LJ Rich meets Tim Arnold, who has refurbished more than 250 pinball machines at the Las Vegas Pinball Hall of Fame.

VIDEO: Facebook set for the stock market
Social media giant Facebook is expected to offer itself for stock market flotation in the United States with a valuation of around £60bn.

AUDIO: Flansburg, the 'human calculator'
Radio 5 live Breakfast challenged the man dubbed the 'human calculator' by US host Regis Philbin with a maths puzzle.

VIDEO: Facebook unveils plans to float
The world's largest social networking site, Facebook, has announced plans for a stock market flotation.

VIDEO: Facebook 'to list on stock exchange'
The world's largest social networking site, Facebook, is expected to have its stock market launch with a value as high as $100bn being estimated.

AUDIO: Sir Howard Stringer's Sony legacy
Duncan Bartlett reports on Sir Howard Stringer's legacy at Sony, as he steps down as head of the Japanese corporation.

VIDEO: How valuable is Facebook?
The world's largest social networking site, Facebook, is expected to have its stock market launch with a value as high as $100bn being estimated.

VIDEO: UK mum denies son's 'web piracy'
Julia O'Dwyer tells Newsbeat that President Obama gave a typical politician's response to questions about the extradition of her son.

VIDEO: How computers help Sweden's ice sculptors
Spencer Kelly reports on how ice sculptors in Sweden are making use of computers to complete their cold creations.

VIDEO: Fiction gets technology makeover
LJ Rich investigates the possibilities of multimedia story-telling by getting dressed up for a starring role in a multimedia project.

VIDEO: Social exercise and school-wide web
Kate Russell looks at ways to keep motivated when exercising and new innovations for education websites.

VIDEO: Crackdown on spam text messaging
Companies who send out spam texts are being warned that investigating them is a high priority

VIDEO: A new Star Wars and other tech news
A crowdsourced version of the sci-fi classic Star Wars: A New Hope becomes an internet hit after nearly three years in production. This and more in this week's tech news.

VIDEO: Facing up to threat of cyberwar
Military experts gathered in London this week to discuss the growing threat of cyber-attacks to international security.

AUDIO: Woman stalked online by ex-boyfriend
Amy Lees told Radio 5 live's Victoria Derbyshire about being cyberstalked by her ex-boyfriend who was posing as another man.

VIDEO: £80m police smart phone plan criticised
An £80m Home Office programme to give police forces Blackberrys and other mobile devices has been criticised by the National Audit Office.

VIDEO: Child's toy launched 'into space'
While America is running down its manned space programme - further north - two Canadian students have shown that flying towards the edge of space does not always have to be rocket science.

VIDEO: Soldier's mind-control bionic op
A Tyneside soldier travels to Austria for the first stage of a process to fit him with a bionic arm he will be able to control with his mind.

VIDEO: How Google 'removes' content
Google's legal director Daphne Keller explains how the firm is able to stop people from discovering contentious material using its search engine.

VIDEO: Rules to protect online data sharing
Dan Simmons discusses the impact of proposed data privacy rules set out by the European Commission on Wednesday.

VIDEO: Webcams to monitor Russian vote
Live footage from thousands of Russian polling stations is to be streamed online in an attempt to make the country's forthcoming presidential election transparent.

VIDEO: Who will win video streaming 'war'?
With streaming service Netflix launching in the UK into an already crowded market, Spencer Kelly looks at who might be victorious on the on-demand battleground.

VIDEO: EU proposes data storage changes
The Justice Commissioner, Viviane Reding, sets out proposals for new data privacy laws for the European Union.

VIDEO: Facebook's 'Neighbourhood Watch'
Facebook has "an 800 million-strong Neighbourhood Watch system" to protect against people carrying out malicious acts, the Leveson Inquiry has heard.

VIDEO: EU proposes data storage changes
Technology correspondent Rory Cellan-Jones discusses plans to change European privacy laws, which the European Commission is set to announce.

AUDIO: Gates: Capitalism a 'phenomenal system'
Bill Gates talks to the Today programme's Evan Davis about capitalism, philanthropy and US politics.

VIDEO: Do ultrabooks spell end for desktop PC?
Marc Cieslak reports on the rise of powerful, portable laptops and the supposed demise of the bulky computer tower.

VIDEO: Digital designers return to analogue art
Artists in Chicago straddle the divide between analogue and digital design.

AUDIO: Reddit co-founder talks SOPA
Reddit co-founder Alexis Ohanian discusses the impact of the proposed SOPA Bill with Christopher Marcich, President of the Motion Picture Association, Europe on the BBC's 5 live Investigates programme.

VIDEO: 3D coding turns disaster to art
Israeli artist Eyal Gever offers a tour of his studio in Tel Aviv, where he uses computer programmes and 3D printers to turn disaster scenarios into sculptures.

VIDEO: A smart view on 2012's tech
Spencer Kelly discovers some of the less high-profile launches at the International Consumer Electronics Show (CES) in Las Vegas, the world's largest consumer technology tradeshow.

AUDIO: Should online porn be blocked?
If you switch to a new provider for your internet access later this year, you'll be forced to make a choice: do you want access to adult content or not?

VIDEO: Online teen editor's secrets to success
Tavi Gevinson talks to the BBC about being a blogger, an editor-in-chief at RookieMag.com and a young girl.

VIDEO: Hackers retaliate over Megaupload
Hackers have targeted the US government and copyright organisations following the shutdown of the Megaupload file-sharing website.

VIDEO: TV & web: A match made in heaven?
Rory-Cellan Jones journeys from Silicon Valley to the Consumer Electronics Show in Las Vegas - on a quest to discover whether television and the internet were born to be together.

VIDEO: Kite power and other tech news
American start-up company Makani Power has created a kite-like wind turbine which could generate cheaper power.

VIDEO: Webscape: How to share your desktop
How to share your desktop and taxi to the airport.

VIDEO: Winter driving: How to keep safe
How can you keep safe whilst driving in the winter weather? BBC's Richard Lister visits a research centre where cars are tested in temperatures as low as -40C.

VIDEO: Metal theft 'threatens' Olympic travel
The government has been told to back a plan that supporters say could help tackle metal theft before the start of the Olympics.

VIDEO: Wikipedia co-founder defends shut down
Wikipedia's founder, Jimmy Wales, says he agrees with protecting copyrighted content but not with the way it is being done.