"Self-published and questionable sources may be used as sources of information about themselves, usually in articles about themselves or their activities, without the self-published source requirement that they are established experts in the field, so long as:
The material is neither unduly self-serving nor an exceptional claim;
It does not involve claims about third parties;
It does not involve claims about events not directly related to the source;
There is no reasonable doubt as to its authenticity; and
The article is not based primarily on such sources."
