Write often; it is a must do for success

This is an absolute requirement. You must update your blog often because readers demand new and fresh content or they will not visit your blog. Secondly, posting often is necessary because of SEO (search engine optimization). Search engines visit a site more often the more it is updated.

Link often

Bloggers link to other blogs because they respect the blogger to whom they are linking or they are interested in the blog subject matter. You need to link to blogs that have high quality content. Your readers will repsect you more and so will other bloggers.

Be yourself

You need to first decide who you are as a blogger. No one has time to blog about everything. Also, what are you going to blog about? Your compnay, personal interests, what? Finally, who is your audience? Answering these questions and being yourself will help you to publish an effective and interesting blog.