Here something about me:
I'm Joris from the Netherlands and almost graduated as a civil engineer but already working as a geohydrologist (groundwater and stuff).
One of my interests is living history (re-enactment) and from time to time you can find my walking around as Viking. As such I'm very interested in everything about that time and especially archaeological literature about excavations. Lot's of books about excavations are very old and only a few of them are already avialable on the internet, like
this book from 1882 (certainly no copyright there any more).
My reasons to build a scanner is that I occasionally buy or borrow a book and like to make copies to share with others or, in case of a borrowed book, to also keep a copy for myself. Until now I used a scanner at work which makes reasonable scans and produces an instant pdf. However scanning books at work is no fun when the books are getting thick (>100 pages takes a long time) and it's only black and white. Others in my re-enactment group have a lot of interesting books but are not very keen on lending books because the books are quite expensive. Digitizing them would be a huge step forward in opening up all the knowledge in there. Being able to do so in a "book-friendly" way would make them much more willing to let me scan there books as well.
Some of the books I scanned or collected.