Having a blog on your website is a powerful way to express yourself and popularize your ideas! Many famous people like Madonna and Larry King have blogs. Companies also have blogs. Look at Google! Thanks to their blogs, Madonna, Larry King, and Google are able to reveal to a more human aspect of who they are, justify their ideas, and make themselves even more popular.
Your online blog will certainly help you attract many like-minds and find new friends. You can let people post comments on your blog and thus get valuable feedback on your ideas from various interesting people.