Room dividers are not a new concept. They've been used for thousands of years and the screens that were made in the orient are now very valuable.
The Asian culture is famous for beautiful screens of silk that told great stories of their history and legends. The old ones are valuable, but even modern-day versions are desirable as a way to decorate and designate spaces in a home. You can also look for modern 3d wall blocks via http://www.modulararts.com/blocks/designs.html.
Image source: Google
They are both beautiful and functional. Many people find that either due to the poor design of open space or the need to utilize a room differently than what was originally intended, room dividers are a necessary addition to their home. There are a number of types of room dividers and they can do more than just act as a portable wall. Some serve as art, others as storage in the form of bookshelves, others are functional in a kid's playroom.
Room dividers are used to block light if you have a window that is too bright at certain times of the day, typically in an entertainment room where it causes glare on the TV screen.
These are popular furniture pieces for city loft apartments that are essentially one big room with no walls. The huge advantage to a portable wall or room divider is that you can literally rearrange the size of your space at a moment's notice. No longer are you required to have a 10×13 bedroom, you can make it 15×20 by just adjusting where the divider sits.
Get more living room furniture? Move the wall over and you can accommodate it. For those are of a more carefree nature it's a perfect way of life. It's the ultimate in flexibility.