I don't have thousands of followers like some writers do because I don't have the time to be a prolific hubber, but I am satisfied with the quality of my followers. It seems to me that most of my followers have followed me because they either liked my hub or because they liked a comment I made on someone else's hub. In fact, I believe my comments have drawn me more followers than my few hubs. So I suggest that when you read a hub, leave an insightful comment. Don't just leave a short terse comment like, "great hub, you're a good writer".
Worse yet, if you think enough of a hub to read it, leave a comment. I notice my hubs get a lot of reads and no comments. I'm sure some people have not been interested and click off, like I occasionally do if I find a hub doesn't interest me, but I see a lot of complaints from hubbers about people who do read and don't comment. Perhaps if those folks left a comment, I would follow them.
If you like someone, follow them. Chances are, they'll follow you back but don't hub hop just to click on follow. I do get suspicious of writers who are following 1,137 and have only 20 followers.