Research Disclosure has PCT Minimum documentations status making it a mandatory search for international search authorities
The Research Disclosure publication service allows you to easily establish your inventions as prior art stopping others from patenting the same. The service has been the industry standard for over 45 years. It is inexpensive and provides both immediate online and full printed publication.
In theory any relevant publicly available document can be used as prior art to defeat a competitive patent. However in practice for a disclosure to be truly effective firstly it needs to be published in a location patent examiners actually search. Secondly, the publication date and the fact that the content has remained unchanged must be unquestionable in court.
A full explanation of these points and how they affect the strength of your disclosures is available here.