The Google Directory is a web directory which rivals the Open Directory Project in size. And on Google directory you can submit your website or also you can be a editor too. Submit your website with right categories. Thus, huge user know about your site/blog and you will get huge traffic.
Already Google Directory listed more then 20 to 25 types of Categories and choose any one and get your interested information relevant website or blogsite in one place. Hope, this will work for you.