Facebook: Facebook is an immense social networking service with around 1.15 billion active monthly users (as of June 2013). Launched in 2004, it's open to anyone aged 13 or over. Users can upload a photograph of themselves, update their details, and tell the world what they've just had for lunch. It's a great way to stay in touch with friends, share photographs and organise events. Privacy is important, and Facebook has put a lot of work into helping make sure everyone - especially young people - can keep themselves safe online.
Firewall: A computer connected to the internet is visible to anyone else on the internet - and this makes it vulnerable. A firewall sits between the computer and the network - like the physical firewall designed to contain a fire in a building. It is a device that controls the flow of information across networks of computers. It examines the source, destination and type of communication and compares them with existing lists of allowed and disallowed actions. Firewalls are border control for your computer.
Firefox: One of the ‘big four’ web browsers, together with Google Chrome, Internet Explorer and Safari. Created by Mozilla.
Flash: Flash, or Adobe Flash, allows web designers to create animated websites containing graphics, cartoons, games or movies. It's quick to load, and can stream media. To play many games or watch video clips online, you'll need Flash Player. It can make web pages slow to load, so not everyone is a fan...
Fapchat: This is a term being used to describe sexting using the Snapchat app. People may think this is an opportunity to 'sext' without the picture being permanently online. However, there are ways to capture images from Snapchat, so this is not the case.
