I want to start building a list. I will be in the internet marketing/make money online niche. Now, I am subscribed to quite a few marketers, some from this very site, and ALMOST every time I open an e-mail from them, they have something free that they're giving away, like ebooks, reports, video, etc. Now, I don't believe that it's all THEIR products. Sometimes when I go to these pages, the ones who own the product is different than the one who e-mailed it to me. I hope that I'm making sense. I hope you guys know what I mean. Like, when you go to the page where they're offering some thing free, then you type in your name and e-mail address, then it either takes you to the page to get the free download, or it takes you to a page where you can buy something (upsale or main sale).
Anyways, I was wondering, where do marketers get all of these free resources from?
I know some of these things are their own products, but I don't think that most of them are.