I was actually browsing through all my tumblr posts the other day and I realized that, as with any blog, it's a virtual diary. Except it's interactive. Other people read it, other people comment on it and 'like' or 'reblog' the posts that they can relate to.
It's cool to remember the things I was feeling when I made certain posts and how other people's reactions indicate how they were essentially feeling the same thing.
I'm telling the story of my life and other people are reading it, becoming a part of it.