To build a following you have to be prepared to put in a little time making comments on hubs, giving answers to questions, following a forum thread and generally giving feedback and praise (or criticism) where you think necessary.
Read hubs that are of interest to you and start to build mutual relationships. Write hubs on topics you are passionate about and other hubbers will read them and comment, or even follow you. HubPages is a very responsive community and you'll find that as time goes by you'll get people following. Best of luck.