Have you submitted them all to search engines? (dmoz, google and Yahoo to start)
Do you have them in your email signature and signature on forums?
Do you take part in forums and comment (relevently!) on other blogs to start getting known in the blogging world?
Do you post business information that interesting and interaction (ask questions, share resources, help others) on your Facebook page regularly? (by which I mean at least once a day, ideally several times a day)
How often do you update your website?
Do you share your website and blog updates to Facebook?
It takes time. A very successful blogger once told me it took 500 posts before she really got proper followers. I've always thought that was about right. Also keep in mind that a lot of people might eventually read your sites, but you won't know - people who comment are the minority.
Just keep at it!