It can be depending on why you're following them.
People who follow a lot of hubbers in a span of twenty four hours make me leery. Are they following them because they generally find those people interesting? Or because they want to get followed back?
If you're following them because you genuinely want to see their hubs and whatnot on your feed, then I don't see the problem. But if you're doing it to get the follow back and gain your own following, then yes, it's bad.