How open should SuperUser be to questions that are very specific to a particular piece of software?

Example: Lately I've become somewhat of a 'power user' of Paint.NET. It's a fantastic piece of software that does a real service to the community. I'd like to see/ask questions like

• How do I do a wood grain texture in paint.net?
• How do I do drop shadows in paint.net?
• How can I emulate layer masks in paint.net?

etc. etc. etc.

I'm sure that other folks can fill in their favorite app du jour for 'paint.net', but I'm curious to see whether folks think that questions like this add or subtract from SuperUser. Is this cruft or pie, as it were?