I ordered the free knife knowing going in that is was just a lure to get you to buy something else. When I saw the offer for a second free knife, I knew that is was a catch. If you bother to read anything else, it tells you that you are also going to be in their club and there was a monthly fee. I clicked on "no thanks" and got my free knife with no problems, and it is good for what it is.
I do get lots of emails, sometimes with an offer I'm interested in, or just useful info. I don't think that it is a scam.
Bottom Line: Yes, I would recommend this to a friend