I posted about some stuff I found for my grand gathering I was excited about and saved money, like where I got trading pins and autograph books. I have no relationship to the vendors I just thought they were really cool and when I put them together it is perfect for our upcoming trip. Are we not allowed to share finds and ideas if we tell eachother where we can find them?
Giving stuff away is fine. Of course there are people who would say that we are all nuts for giving out our addresses to strangers -- but that's a whole other bag of worms.