Well, while choosing many of the bloggers dont think about this topic. Niche is a heartof your blog if you are not interested about it then it will not flourish at all.

Following are the tips should be considered for choosing a Niche :

1 . Very First Choose a subject -

You are very interested in and you are very passionate about.

2. You must Enjoy writing and doing it.

3. You should like the researching in the subject.

4. You first search for your competitors on web and then think what you can do  differently

5. You can have more than one blog, but don’t loose your passion.

6. Never Copy from other blogs.

More you hardwork more you’ll get out of it.

I guess these tips are enouh for intiall level.