Writing English and imagining the "other"

Another point with taking up blogging is to practice my English. Given that English is a second language for me, it takes quite a lot of practice. And blogging makes you more aware of the fact that you are actually writing for someone - I might imagine that some of my friend or colleagues are reading this. I wonder if that is one of the things that makes blogging such a good idea. You can practise informally, but still be aware that some might read what you write. And thinking that someone actually is reading what is being written means a lot for your own motivation. Instead of sitting in your office, writing stuff for your self, someone is reading it....