Possible Clues:

• Folded over, as a page
• (Of a page) turned down
• Turned down for easy reference
• Like the pages of a much-handled book
• Like pages worth bookmarking
• Much read setter for one that's equipped to listen
• Worn and shabby
• Party to clobber writer with magazine showing age around edges
• Scruffy and shabby party clothes editor put on
• Like the pages of a much-handled book (2 words)