While all great comments on what's going on and how to reduce the probability of hitting your bandwidth limit I follow all these, for the most part, and still hit my bandwidth limit a stupid amount, and I think is more than just an issue of following too many people, upvoting too much, etc. New users will more than likely always be the most active while they're still new and excited and to limit their actions are going to have a long term negative effect on steemit.