Digital books are your friends

I posted a defense on Stupid Ranger for using digital documents versus their paper counterparts:

A book is nice but its also nice to:

1. Have a search function.  Try finding a random spell or odd phrase in 10 seconds or less with the paper version.  It can't be done.
2. Save a tree.  In 3rd edition, about 1 in 10 of the monsters in the monster manual are meaningful to me.  Why do I have to carry around the other 9/10ths?  Instead, just print out what I need.
3. Keep it forever.  Digital books don't get stolen, lost or damaged.  You make a backup and save it on to a key drive the size of your fingernail.
4. Modify it digitally.  Skim (Mac) and PDF XChange (PC) both edit a book without actually damaging or modifying it.
5. Digital readers.  Book reading tools (like the Kindle and others) are gradually getting better and better.  They will eventually get down in price enough to be comfortable to read, last weeks on one charge, and hold millions of books.