If you like to make a blog, i suggest you to make it at wordpress.com. Blogs that i made by wordpress CMS is so powerfull in SEO. Just to let you know that every tag that used in your post is counted as a new section of your blog. This is so great in SEO, so many people visit my blog by tags that i make for every single post.
That is the reason i will always choose wordpress for my blogs. It is findable by search engine especially Google. Make your blog today ar wordpress.com, and you will be happy for it.