I will refund you if you don't like it after your first week :). I think I need to update that because I was planning to share all the previous ideas once you pay that's why I wasn't offering a trial or refund. Now it's only weekly you don't get previous ideas.
It may be useful to provide a sample newsletter as part of the FAQ to help others to get a feel for what to expect.
I have a question to that regard, are you just surfacing the "problem statement" in the newsletter or are you transparently providing the links to the SM sites that they were scraped from?