Watching TV shows online is very convenient because you can watch a show at whatever hour you want. You can also decide which episode you want to watch. If you like a particular episode a lot, you can even watch it a few times. I believe that the Internet will be a place where more and more people will watch TV shows. At the same time, people will be watching regular TV less and less. When it comes to TV shows being hosted on the Internet, unfortunately most of the cases indicate that it was being done illegally. Currently, this trend is changing and sites like Hulu.com offer free streaming of many popular shows to the public, and so far it looks like all of the files are hosted legally.