Make sure your content is always informative and explain concepts that may be new to some readers.
Not everyone who reads your blog is an expert or professional blogger. In reality, your reading audience will be composed of those who wish to learn as much as by those who are old pros at blogging and Net surfing.
Make your content accessible to all.
By accessible, I mean content that contains solid ideas executed with good writing skills, and that means written in an easily understood style without typos and grammatical errors. This can be tricky because you must provide editorial sustenance for all readers by creating content that speaks to all levels of information proficiency.
By accessible, I also mean that your blog or website needs to be optimized for all the most popular browsers, not just Firefox or Internet Explorer.
Like most things in life, these 2 tips can be filed under: simple but not easy.