There are many uses and implications of the use of steganography on the Internet. The extreme implications of course would be terrorists using steganography to communicate criminal acts and other materials over the Internet. Rumors of Osama bin Laden using steganography has been circulating in the news media. This art of hiding information isn't necessarily for criminal mischief. It could be used for fun.
People can communicate through creative steganography programs.
Imagine someone sending his girlfriend a photograph with a hidden poem inside it, or in a business scenario, an executive hiding sensitive company secrets in regular looking files. There are practical and applicable uses for steganography. The use of steganography has always been around. The Internet is a haven for people who like steganography since there are various forms of Internet data that can be used to hide information with. Everything from images to music files and of course, even spam, can be used to transmit hidden messages.