I've used the OliveTree Bible reader on my Palm devices for years, and I will never go back to a hardcopy Bible.

1) I always have the Bible with me. No more thinking about something else to grab on Sunday mornings. Just grab the same device I grab on all other days.

2) I can search through the Bible to find anything that comes to mind during the service, without using a limited index.

3) I can flip through the bible in seconds, not .5-1.5 minutes, like most page-turners.

4) I can compare different translations of the Bible withouth carrying more around, or using one of those comparison bibles that only holds 2-3 versions. by the same token, I can carry a translation that I prefer to use, even if it's not readily available in stores, or in a formfactor I like.

zerojay: PDF readers don't offer the refinement of search terms (only search the Pauline letters, for example), nor do they make it easy to switch chapters within the same book. Instead, you have to go to the table of contents.