When you are choosing a topic to blog about, remember to choose one that isn’t going to dry up. Public interest will rarely stay on a subject for long, so be sure to choose a topic that’s held the interest of your target audience for quite some time and will continue to keep doing so in the future.
You also have to have or develop a more than normal familiarity with the chosen topic if you want a reader to take you seriously. Readers are not going to stick around to read things they already know or that they don’t believe is interesting or relevant.
Therefore, never choose a topic that you don’t know anything about. Chances are, if you know nothing about it, then you most likely don’t have much interest in it. Ideally, when your audience is reading your blog, it should be obvious that not only are you an expert on that subject, but you’re also passionate about it.
In addition, be sure to research competition. Find out who they are and how much of it really exists. Unless you develop an original approach, you’ll do yourself harm by entering a topic that’s already flooded.
If your topic area appears crowded when you first take a look, remember that every topic has countless niches that have been unexplored. Do your homework and find a topic no one else has done and what might work for you, based on your knowledge, experience, passion, education, and interests.
Before you commit yourself to a specific topic, understand that whatever theme you choose is going to become the central point of your blogging career. Your passion and interest for the topic should be strong enough to sustain you through times when you’re not sure you can bring yourself to read another article on that subject, much less write another blog entry about it.