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.