Hi,
I had heard of sites where you can give samples of a product away, in order to get reviews that can then be used i.e. on landing page as social proof, etc. But I don't recall the names of these sites and I haven't had any luck searching for them. I'm a newbie, but some of you must be familiar with what I am talking about. Bottom line, I've to a new ebook and landing page and would like to submit it for comments, etc. that can then be used on my landing page.

Yes, of course, if I can get celebrity comments all the more valuable. I would like to check out those sites I've heard of as a starting point, if someone can point me in the right direction.
Thanks!