I just came across a thread on books on traps in chess: Books for chess traps
The chosen answer mentions a free ebook by Bill Wall, who I did not know, and as I was trying it, the very first example given seems to contain an error. I wanted to ask the member if he himself had gone through the book or knew Wall's rating or just quality of his work, but I can't. I guess I can't PM members either. So I don't know what to do, aside from making another thread and just refer to that thread and ask my question...which I just decided not to do because to me it's unnecessary really.
In my view at least, it's odd that I can make a whole new thread or I can make a big "answer" post despite my low credits, yet I can't make a short comment barely visible to anybody else and for that I need more credits. Can someone explain this logic?