Went to BookOff! and found some nice art/fan books.
I don't keep the obis but it seems many people do since all these used books have them.They make it hard to shelf books so I always take them off. I've started to fold them (on the spine crease that already exists) and keep them in the back of the book now.
Also notice how much thicker the Kanon Visual Book is than the F/SN fanbook. It's actually 6 little books, one for each character and system book.
Kitty loves eroge artbooks!
The Kanon Visual books. On the back of each one is a small sketch version of the cover to show though the back of the slip case. Each is set up like its own little artbook with sections, etc. The Game System book has walk through charts and interviews.
A mini book is a bit thinner than a issue of Mac|Life or other perfect bound magazine.
Book Off is a bad place for me to go. Too much good stuff and and oddly large eroge artbook section.