Help Me To Developing WP

Hi All, I Have 2 Domain [premiumacount.com] [free-softwares.net] Since 3 Month But I can't Develop It [Because Short Of Time] Now i Read Article About Autoblog And I want To Earn Few Buck From That Sites I know The Both Domain Name Are Not So Good But I Want To develop It. Please Suggese Me Which Niche Is Better For That And Please Tell Me Which Rss is Better For These Both Domains. Because Now I Install Wordpress.