Any feedback on NetGalley?

Uh, FWIW, reviews don't usually result in sales. Reviews are usually the result of sales (or giveaways, in my case). We all guess at Amazon algorithms, but most people poo-poo the "fifty reviews required for Amazon algos to kick in" idea as a myth.

Getting proactive with customer reviews is usually done for a couple of reasons. Some newsletter promotions require them, and some readers are more likely to check out your book if you've got them. I usually fill this need with goodreads reading rounds and Hidden Gems.

The general impression I've had of NetGalley is that they strongly skew toward trade-pubbed books, so they're not worth it for SPers. Also, I've read that their reviews are editorial, not customer. I'd verify both of these impressions independently, however, before making any decisions based on them.

I've decided to avoid NetGalley as the consensus among several self-publishing groups that I'm part of is that it's a prime hunting ground for book pirates. I'm in the process of cultivating my own review team.

I would agree with the comment that NG reviewers flock to the popular trade-published books and mostly the self-pubbed books don't get as many hits.

There are currently GR reading rounds forming, as Cathleen mentioned. I also posted a link in the thread you formed a week or two ago with another group, if you're interested.

The reviewers will favor certain books but it is not just trade, a book based on a popular indie serial also got hundreds of reviews. I, personally, doubt it is full of book pirates. You only get access to books you are approved for, and I doubt pirates would be maintaining accounts that meet the common criteria of having a publication or busy blog and giving thoughtful reviews to at least 80% of book requested.