Nobody said non-technical questions are unwelcome, just ones that don't pertain to Rockbox. Questions about the website, forums, etc do pertain.
Zero-poster is a category every forum member is in until they've made one post. When they're in this category there's an extra board at the very top of the forum called "Spam" that disappears as soon as they've made one post.
This board exists, primarily, because evidence suggests Spambots posted to the first board in the forum so the hope was that Spambots would post to this board, while legitimate posters wouldn't even notice the extra board before they've posted and it vanishes.
Interestingly, a few people post to this Spam board, almost obviously because they didn't actually look and juts clicked the first place and posted. I can only wonder what they think when they are immediately unable to check on the post they've just made.