What is the biggest issue facing blogging, citizenship and the future of media?

Before interpreting my opinion upon the impact facing blogging, it was essential that I understood what it is. A blog (web log) is a website where entries are displayed in reverse chronological order, and have been a medium which essentially becomes a form of public sphere in the new digital age. Although I have used web logs like Xanga as a personal diary, and specific forums to discuss my own interest with people around the world, I have never thought about the specifics of what a blog is. It is my understanding after substantial research that a blog is a very broad genre which includes Youtube as a example of a vlog, and forums which consistently participate in the act of micro-blogging.

The modern world is flooded with advertisement at every corner of our physical world, and would spare no difference within our digital one. No matter what sort of web service we decide to use nowadays, there are always going to be a form of advertisement either on the right hand column or the left hand column on your screen. It is easily understandable that some of these fabulous free service we enjoy on the web such as youtube, and google will undoubtly consist of advertisement from the sponsors of such services. All of this lead to the issues of spamming and spyware where some sites may force the web users to actively receive unwanted advertisement that covers the span of your monitor. It is a issue that is rather intrusive to a web user's experience and have been a problem that's as difficult to contain as piracy of copyrighted material. Hence creating yet another double edged sword that came out of our new digital world.

Blogging becomes a space for freedom of expression across the world, although some of these contents are questionable in it's validity, it is also a great concern as to the subjects that are created within its content. Freedom of expression is a great gift, but how far can we push the boundaries in the digital space? since we can talk about anything in a blog, is it justifiable to attempt to influence others in your believe to harm others around you? and if a perfectly normal citizen who happen to have a bad day decides to rage across his blog about his hate toward the world in a attempt ot vent out his anger, would it be justifiable to arrest this individual before harm can be done?