I came across this great Google doc that my pal Spin's Vixenella wrote and put up on Twitter. I think it's a great example of a letter you can write to the advertisers if you choose to do so. There is information on how to find said advertisers and how to frame your letter if you are unsure how to write one.You can personalize it any way you wish. I'm going to send postcards in as well. Good luck...it's a start!!