Users send email, look at the weather forecast, look at sports result, load rining melodies into their handsets, play games, do online banking, online stock trading, purchase air tickets, download cartoons and images, look for restaurants and look for new friends. Yes there are imode emulators available on the internet. However, there are many handsets in circulation which differ quite a lot. So at the moment you need to be able to read Japanese in order to read most imode content or to test imode pages. There are gif images, animated gif images but no movies on imode right now.
Some handsets have color screens and can display color images.
Yes, there are. This can also include a privat leased line between your company and the imode center avoiding the public internet for extra security.