I was doing research for my book webinar and I found this article: Sites to spread the word about your free ebook
The kicker is that you have to offer the eBook for free…. which can be a temporary thing (in other words, set the price at zero, get the marketing from this huge list of sites, and then put a real price on the eBook).
Interesting, huh? I didn’t expect to find a list of sites that did this type of thing… !