foxxo writes: "I'm a library worker, so I get lots of questions about our collection when I'm out in the stacks. I'd love to be able to access our online catalog and give patrons more comprehensive guidance without directing them to the reference desk. What options are available for a portable device with wi-fi connectivity, full-featured web browsing, and (most importantly) no cellphone-style activation and service fees? Size is important, too; I need something I can carry in my pocket, not a micro-notebook with full keyboard. (And I am a library worker, so low cost is key!)"