Most of the users on Twitter that are trying to build up their Twitter followers knows the ratio of following to followers can not get too lopsided in in favor of following.  The first following limit is 2000.  There are many programs that guarantee building your twitter followers for a small fee but if you are looking for free social media tools, check out Friend or Follow (FoF).  Friend or Follow allows you to see all of the users that you are following that are not following you back.  This tool can be valuable if you want to keep your following to followers ratio in balance.  FoF allows you to unfollow profiles within the program instead of clicking back and forth with Twitter.  The only downside to this tools is it only allows you to unfollow about 40 profiles at a time.  Anyone looking for another free socail media tools, Friend or Follow can help you out.