Recent leaks
Twitter can get all types of information, Organisation's privacy on Twitter is open to anyone to view and you can search anything you want on twitter, this may include leaks of a latest game for example Call of Duty. There was a recent leak of the whole game being illegally uploaded to the internet for people to download. Here is another example Apple have had leaks in the pass with their products, a recent leak was the design of the iPhone 5 which they had a physical device when it hasn't been revealed/released yet.
This can affect the campany who developed it because you can get information about the game and it hasn't even released yet.
Tracking people's activities on the web
No we don't always know when people are tracking our activities, but in some cases when your using a new application you can use your Location to determind what the app does. But people shouldn't be able to view your activity without your permission.
Older/Young people can't afford to access
People that can't access computers to use the internet is not fair but there are ways to get on the internet and be active, this is holding people back because they don't no how to use a computer and use it for it's advantages you can go to internet cafe and use their services there. Go to your local library.
