Top 3 (or so) sites to announce free book promotion?

Lots of folks swear on LibraryThing for digital giveaways. It's easy enough to do a 100-book (or 50, or 20) giveaway. The return looks to be about 10% reviews, which is a heckuva lot higher than through random sales. I just did one and am waiting to see how it goes. As far as listing your freebie, Ereader News Today, Pixel of Ink, and Freebooksy are three good ones. Some more resources:

http://www.indiebookslist.com/kdp-select-submission-form/
http://www.pixelofink.com/sfkb/
http://ereadernewstoday.com/ent-free-book-submissions/
Books on the Knob: https://docs.google.com/spreadsheet/viewform?formkey=dHI3UVVZdTZkWUo3d2w3aDExbXk5MEE6MQ#gid=0
freebooksy
http://bargainebookhunter.com/feature-your-book/
http://flurriesofwords.blogspot.com/
http://www.thatbookplace.com/free-promo-submissions/
http://freekindlefiction.blogspot.com/p/tell-us-about-free-books.html
http://www.orangeberrybooktours.com/2012/06/orangeberry-free-me.html
http://authormarketingclub.com/members/announce-your-free-book/
http://www.ereaderiq.com/free/
http://tracker.kindlenationdaily.com/
http://thekindledailydeal.com/contact.cfm
http://bookgoodies.com/
http://the-cheap.net/authors/free-promotion-opportunities/share-your-deal/
http://onehundredfreebooks.com/contact.html
http://authormarketingclub.com/members/submit-your-book/
http://www.mediabistro.com/galleycat/free-ebook-promotion_b52130

Book review blogs are a good bet for actually getting your book reviewed, but many have long waiting lists, small followings and may/may not post to Amazon.

Ultimately, promote judiciously and have a lot of patience. And read a lot of the posts here. Great stuff.

Getting reviews is different than announcing a free book promo, so I'm a bit confused about what you really want to know, given the actual post. After my early attempts writing book blogs and doing LibraryThing giveaways, I gave up on the review thing and decided to let them accumulate naturally. So I have no advice there.

But I can help you with the freebie promos. I have a blog post that I update fairly regularly about where to promote your free book:

http://ruthnestvold.wordpress.com/2012/03/04/promoting-ebooks-with-kdp-select/

I use it myself whenever I have a free run. I'm slowly pulling my books out of KDP Select, so in future the updates probably won't be quite a as frequent. But I do still intend to keep at least a couple of books in KDP Select, at least for a while. Gives me more promotional opportunities.