I have my own private battle with the post office. I have send ( and received ) such crazy stuff that now the postal workers all know me. If I try to mail an envelope, they instinctively pinch it here and there to find the pop top tab, the eyelet, the penny to make something roll down a tab ... and then they charge me for it.
So one layer cards really make me happy. I can stick 'em in MY mailbox with a stamp and know they will get where I want them to go without bouncing back like a bad penny .... for another nickel and dime.
Here is a direct quote from Donna C but I love the sentiment and can't say it any better than she did ...
email@example.com----- Nothing on this blog is personally copyrighted. You can use anything you want and I don't care if you call it your own. Copy things exactly and say they were your idea. If I run into them on your blog, I will be thrilled to see that someone loved my idea enough to copy it. If I put it on the net, I don't consider it stealing for you to use it in anyway you want. Go for it and enjoy! That is what this hobby is all about.