Sachys: Are links to problem solutions / guides etc allowed (such as from a Steam discussion board) or is it a blanket ban and that counts as the storefront as well?
Clownski_: Good question!
If we're talking about guides/solutions/workarounds (regarding bugs) posted in good faith (i.e. actually on topic, not just someone advertising their creation) and with relevance to a title available on GOG - that's allowed.
All the posts will still be judged on case-by-case basis of course, so they might be subject to removal, depending on the context. Generally speaking though, I'll allow it.