The subsequent websites have not been as easy, I have had many spur of the moment ideas, which sadly have turned into non-events.
This website has had moderate success. The reason behind creating this site was due to my interest in making websites and learning about the associated way to improve and increase the popularity of websites.
How do you decide what is the best for you. What are your interests? What do you enjoy doing? Create a site around one of those interests, this way you already have a knowledge on your subject, and updating your site will be a pleasure. Having a presence online for your business, a club or association. All great ways to start a website.
Let me know what your sites are about, and are they following one of your interests.