I very much agree, as did others. I experience that extensive information about CMS development is rare on the Internet - partially because all forums and sites dealing with CMSs are being overcrowded by marketing speak from various vendors.
Does anyone have good suggestions as to where to start in the web when it comes to actual CMS *development*?
No ads, please. Oh, well, yes, give me your ads - after all, I want to look at the concurrence...