HOW TO WRITE A BLOG

Blog writing isn't as structured as other types of writing. Most amateur and professional bloggers don't have to follow many of the strict editorial procedures as their professional writing counterparts. That doesn't mean there aren't guidelines, however. Before publishing each post, try following a few basic rules of thumb. If you've never done this before, you'll want to read on to learn more about how to write a blog.
Don't lecture, discuss:

While it's fine to inject humor and opinion into your posts, it's best not to digress too much. Blog readers have notoriously short attention spans. Learn how to write for the web and keep it short and sweet. Blog writing is different from article writing in that with a blog you’re stimulating discussion among your community. Bloggers aren't writing articles as much as they're providing useful information, and hoping their readers will add insight, expand upon, discuss or even argue the contents of the post.
Make it easy to read:

Abbreviations and funny spellings hurt the eye and break up the flow of a paragraph. Typing in all caps hurts the eyes. Do yourself and your readers a favor and make sure your posts are easy to read.

Links:

A blog is nothing without links and not only the links in your blogroll, either. Each post should contain links back to previous posts, quoted sources, definitions, and more. When you link back to other posts from your blog, you're generating more page views, a very good thing. When you link to another blogger, you're sending traffic his way, another very good thing, as there's a good chance he'll reciprocate. Bloggers love to share the link love. While linking is acceptable and encouraged, it's illegal and unethical to cut and past another blogger's content and place it on your own blog without permission.
Community:

Blogging is all about building and fostering community. Post with your visitors in mind. Employ the use of a good stat tracker and find out which search terms and keywords your readers respond to most. Ask questions and find out what your readers want to learn most.
Comments:

Make it easy to comment. Visitors to blogs like to comment. In fact, they want to comment. If your comments are disabled or visitors have to register, they're going to move on to a more user-friendly experience. Remember, blogs aren't about you, they're about your community. If not for them, no one would be reading.