Dude, when you post an advertisement to a forum, you are opening yourself to criticism, so you better hope you can take it! You said PC motherboard density, so yes, people are going to criticize you for that. If you can't do it, apologize and say you can't, don't tell people to shut up about it.
Now, something positive, before I sound too curmudgeonly - I do like the look of the boards. The tinned traces have a nice "old school" look to them, and I would consider using your service if I were anywhere near you.
But play nicely. You're in a forum - it's a conversation, not a television commercial.