One friend of mine runs a Tumblr on design, gets over 15,000 pageviews a month. He says that he gets 3 to 10 followers/likes who are spam a day. He blocks all o

One friend of mine runs a Tumblr on design, gets over 15,000 pageviews a month. He says that he gets 3 to 10 followers/likes who are spam a day. He blocks all of them to avoid linking his site to websites with plenty of ads or porn. It seems something is going on, it needs to be sorted out immediately.