I have not gotten anything sent to my house but they will spam you. Make sure you use a private email address. And don't bother clicking to opt out, they'll keep spamming you anyway after you do (I know, I tried).
Keep in mind that there are a lot of cool clips up for sale from a lot of producers. If you have a private email you're probably safe, the material available is worth getting a yahoo email account. If they ever start sending out snail-mail flyers I'll be the first to post on here to make sure the world knows about it, it's one of my big pet peeves as well as a violation of customer trust.