Thanks to the Salt Lake Tribune for its short item about the guerrilla marketing campaign for Weller Book Works, which opens tomorrow in Trolley Square in Salt Lake City, after many years as Sam Weller's Books. A key part of the campaign is a "book drop"--the store is leaving 900 books, wrapped in book covers promoting the store, around the city. (The covers suggest people who find and read the books leave them in public for others to find.) Go to the website of the store's ad agency, Super Top Secret, and scroll down to see its very clever wrapping and posters.