Its cool your thinking of writing your thoughts down. I write a blog. on wordpres.org. One thing I noticed are spam comments. . If you're concerned about spam and if you use wordpress.com or wordpress.org there's a plugin called "Askimet" One thing certainly true of the net is there are unfortunately trolls. I personally experienced them. If you decide to do a blog you might want to see if you can control comments. Just a suggestion. I know from workshops doing a journal is a truly therapuetic experiences that helps you with your views, your thoughts, your persective.