Curious case of self-citations and how to monitor self-citers? If one looks superficially at the publications of author X, he seems to be one of the top scientists in his field. But looking more closely his citations are 60% from himself 35% from his co-author, and 5% from others. (Some people might say: “It doesn’t matter, probably he is the only one working in such a field and he has to cite himself.” However, let’s say that it is not the case.)  

This author is only one example of many people who do self-citations. Many of us have grown up to see citation as a measure and started to mishandle it. As it is easy to do so. My questions are:


Isn’t there a system which monitors unethical self-citations apart from the peer-review process, where such authors pass such tests and still extensively cite themselves? 
Isn’t there a system that blacklists authors who involve in similar unethical activities as “fake scientists” and never allows them to publish anywhere else?  
Do institutions not realize that such professors are a potential threat to science and ask them to resign?
Don’t such people demean real science people who spend years of hard work to publish their work?
I don't think there is a good way around self-citations, since most of the time, your current research builds upon your previous research, and therefore, your previous research (or that of your collaborators) is relevant to your current research. However, from my experience, self-citations form a small part of the overall number of citations.

Assuming the author's group is not the only one working on a topic, there seem to be two other problems here:


other people don't seem to cite his work, which could mean that he is ignored, his work isn't visible or his work is just not good and/or relevant enough.
basing quality on number of citations is flawed. The number of citations is closely related to an authors H-index, which is criticized regularly. The same criticism should be valid for number of citations.


To tackle the "problem" of self-citations (I would not say this is a problem in the majority of cases), some citation-based measures are based on citations excluding self-citations. This does of course get tricky when collaborators are citing someone's work, but the large bulk of self-citations will be removed this way.