Others say...

"A must have for art majors"
The Mokeskine notebooks are must haves for art majors. They're handy for quick sketches, laying out ideas for 2D/3D design class, keeping track of glazing formulas, class assignments, personal notes and reminders, email addresses and phone numbers, just about anything you can think of to draw or write down. The smaller ones fit in a pocket or small purse and the larger ones go nicely in your portfolio or backpack.

"Best notebook all around"
This is a great note book. Is very well constructed and will sustain abuse. I am a civil engineer and use it on the field constantly I have 2 a small 3.5 by 5.5 and a medium. I particularly recommend the small with squares the size is perfect for you back pocket.

"This is the book you want"
This is the book many others attempt to duplicate but simply cannot. In addition to the cool little features like elastic band (keeps book closed when stuffed full of other found items & papers), the pocket in the back and the durable cover this is a very well made book. As a student of book making, this is a classic piece. Most books nowadays are a form of "perfect binding" where the pages are just glued on the spine. Needless to say this is as non-archival and non-durable as it gets. Moleskine's are done they classic way: pages folded and sewn together in signatures then sewn to the binding. They will last forever, which is why we still have sketchbooks around from the likes of Van Gogh, etc.

An overall great choice, I recommend it constantly.

"all-around-best notebook"
I have been an afficionado of blank books since childhood, and this one is the best. A moleskine usually lasts me about a year -- that's a year of grocery lists, ideas, business plans, sketches of where the furniture ought to be, phone numbers, recipes, all the things I might have written on scraps of paper and lost if it weren't for my moleskine. Who needs a Blackberry?

This notebook is sturdy, with pages sewn (rather than glued), so they don't fall out. The paper is good quality, a pleasure to write on. There's a ribbon to keep your place, and an elastic to keep the notebook shut while it's bashing around your bag or pocket. There's even a clever little accordion-pleated pocket in the back for receipts or ticket stubs or other small paper treasures.

Moleskines come lined and blank as well as squared, but the squared is best for my purposes -- and you'll be amazed how many uses you find for graph paper once you have it.