I'm sharing a little knowledge back to the community, your thoughts?

I'm a Java/JEE practitioner and in my own little ways I'm writing a blog (though it's limited to what i knew) to share my little knowledge back to the community. DO you think this is a good approach? Well honestly one of the purpose (aside from sharing back to the community my small knowledge) is to have feedback from other Java-related or any programming practitioners. This way, I'll be able to learn from the community too. What do you guys think?