And is there even any security on other retailer sites like Amazon anyway if you don't click dmarc? I never choose dmarc.
I think you mean DRM. DMARC is the email thing. But after a while, the acronyms do begin to run together.
I don't know if this is still true, but I remember seeing a study a few years back that indicated that books without DRM sold better than books that had it. There may be confounding variables, however, like the higher priced trad ebooks being more likely to have DRM, though if I remember correctly, the study got the same result at different price points.
I've also heard that DRM is easy to crack, though not being a hacker, I can't confirm that from personal experience.
Bookmarking is a good idea, though.
And I really like that authors have to APPROVE who enters the promos. I'm so tired of the wrong genres putting their books in BF promos.
Getting books with the wrong genres is certainly an issue for promo sponsors, but the SO approach can be difficult for promo users
if the sponsor doesn't check the sign-ups and do approvals every day. More than once, I got in a bind because I'd signed up several days in advance but hadn't been processed yet. I think some people wait until the day before the promo to approve the sign-ups, but I usually sent out my newsletter on the day the promo went live and didn't really want to wait until the last minute to put it together. I ended up having to cancel my sign-up because I didn't have a link to put in the newsletter. Grrr.... In one case, the sponsor emailed me ten minutes before my newsletter was scheduled to go out to tell me he'd approved me. Sigh!
Admittedly, though, the BF thing made me crazy, too. I've only done about four so far, and all of them had at least some people whose books didn't seem to fit. Trying to be nice, I emailed to ask them if they could explain the connection between their book and the genre and theme of the promo. Not one of them ever answered. Looking at their past histories revealed that most of them had been entering without regard to the nature of the promo for months, which surprised me. It seems as if being in a promo that was a poor fit wouldn't do them any good.