One of the most important pages on your blog will be your About Me page as this is the page that will/should hold all the important information about you so that the reader can know who they are dealing with.
I believe that there are three main areas that should be addressed in any About Me page:
1. Who are you?
2. What expertise do you bring to the niche you are blogging about?
3. How can you be contacted.
Your About Me page is just as important to your blog as a sales page/letter is to someone selling a product online. If you produce a poorly worded About Me page then how can you expect your readers to stick around let alone take what you write seriously?
To see a sample why not have a look at what I have written?