The Yahoo! Directory is a web directory which rivals the Open Directory Project in size. And this directory submission system has two types. a) Standard(submit free) b) Express(submit with fee). You can submit your website and other’s information on Yahoo! Directory without free of cost and Yahoo! will listed your site on to Yahoo! Directory. Thus, huge user know about your site/blog and you will get huge traffic.
Already Yahoo! Directory listed more then 14 to 15 types of Catagories and choose any one and get your interest website in one place. Hope, this will work for you.