Cookies are small text files used by websites to store user information, such as login information, site preferences or activity, so that the website displays information relative to the user.
For example, when a user logs into a site, that user's details are kept in a cookie file created by their web browser. This file tells the site that the user is logged in.
If cookies were not used, a user would have to login every time the page was refreshed or a new page was loaded. Thus, cookies are an essential part of modern websites, as they allow the website to be tailored to the individual user.
What cookies does this blog use?
Google owns Blogger, the service on which this blog runs. When you login to Google services a cookie is set to track you across Google products, such as Blogger, Gmail, Google +.
This blog also uses Google Analytics, a service which allows webmasters to see useful information such as:
- What countries users are from.
- Which pages on the blog users are reading.
- How many views the blog receives during the day, week, month or year.
This blog uses Google AdSense to pay for its costs.
How to turn off cookies if you would prefer not to use them.
Here is a useful site that covers the various web browsers and has instructions on how to control cookies.