WHY SCREENSAVER???

We always put a really cool images as the screensaver when our pc is not in use..
Why the screen savers are used?
Are they meant for fancy-view?? or something else??

Screensavers were first created to protect a computer monitor from phosphor burn-in. Early monitors had problems with the same image being displayed over and over for long periods of time. The phosphors, used to make the pixels in the display, glow at a constant rate for such a long period of time that they could discolor the glass surface of the monitor. This discoloration could be visible as a faint image overlaying whatever else was shown on the screen. Advances in technology and the creation of energy-saver monitors have virtually eliminated the need for screensavers.

Having said that, most of us still use screensavers. The most common reason is for entertainment, they just look good, however, you can also use a screensaver for security. Some screensavers can be set up with a password so you can walk away from computer and know it is safe.

A screensaver is a type of computer program initially designed to prevent phosphor burn-in on CRT and plasma computer monitors by blanking the screen or filling it with moving images or patterns when the computer is not in use. Contemporary screensavers are used primarily for entertainment, security or to display system status information.

Screensaver software can also be used as a rudimentary security measure. Many screensavers can be configured to ask users for a password before permitting the user to resume work. However, a user might be able to circumvent the password by restarting the computer if the computer's owner has set their account to automatically log in upon startup.