Thank you John, some of your points here really make sense. We'll think about it.

You can be sure, that all posts in InterSystems Data Platform Blog  were reviewed by InterSystems engineers team and are promoted by InterSystems product managers.

Speaking about the high standard of technical and professional competence of engineers here in the community, I think votes, views and comments for the posts and answers can indicate the competence. I'm quite sure that there are a lot of engineers in InterSystems Developer Community (DC) who has high competence in InterSystems technology.

We have plans to introduce some signs/badges here on DC, which will indicate competence in different parts of InterSystems technology and products upon their contribution to Developer Community.

You can buy MUMPS DBMS book by Evgeniy Karataev on this site if you want.

Also there is another online book about Caché in Russian: "Модели и смыслы в Caché и Oracle" by Nikolay Bessarabov.

And last year there were new book about InterSystems Caché on Ukranian: see the TOC by Irene Mikhailova and Vladimir Gaidarzhi