Good advice for sure!... i would not be so harsh with newbies doing that, they just don't know yet the best way to grow their followers. Usually i just take a look at that persons profile and if i see something interesting i follow. If they are from my country or musicians i follow them automatically (chances are they are going to post something interesting for me)... I just don't see the hurt of following a lot of people, if someone spams its very easy to un-follow (or mute) and that's it...