First in a series of posts highlighting Tech Digest's pick of big technology trends for the second half of 2007... Let's get one thing clear first. Online TV ISN'T about watching TV on your PC. Well, it is at the moment, because most of the people doing it are geeks like you and me. But in the long term, online TV is about delivering TV through your broadband connection to a proper TV in your living room, bedroom or wherever.