I dropped Salem's Lot in order to speed through the irritating and banal The Handmaids Tale, but I'm still reading Clive Barker's Books of Blood, as an ongoing project. Salem's Lot didn't grab me like King's other works, so I wasn't too into it. Definitely will go back and read it though.
I bought myself a Kindle Fire on sale for a great deal and so yes, I am enjoying the vouchers- mostly on $1 books to make them stretch but trying to only get a book (s) if I am going to read them this year or immediately. I use samples to find out if I like the books before buying it. And of course, I love finding free ones!