The biggest advantage to these online programs is that it gives you flexibility. If you want to make a minor change, you don't have to throw away your work. You can point and click to make the change. If you want to see your room or car in different colors to make your decision, you can see the changes without having to draw different plans.
You can play these online games to see how easy technology makes the design process:
*Create & print your clothes design (http://www.fashionplaytes.com/design-studio)
*Design and print a room design (http://kids.discovery.com/games/just-for-fun/room-maker)
*Create and print a house (http://www.abcya.com/build_a_house.htm)
*Create and print a car (http://www.abcya.com/create_and_build_car.htm)
*Create and print a robot (http://www.abcya.com/make_a_robot.htm)