Hacking del.icio.us (ExtremeTech)

I use del.icio.us on a daily basis for maintaining bookmarks and TO-READ lists of webpages. I flipped through the book Hacking del.icio.us recently to gain some gyaan that could save some time and effort in these tasks. The book is written by Leslie Orchard (and has a badly designed cover IMO). More than half of the book deals with using del.icio.us APIs to create your own nifty tools (as the book title indicates). I'm not interested in this, so I skipped all of this. A few of the early chapters deal with tools/tips to enhance your del.icio.us experience. This was interesting.