Simplenote – Simple Way To Keep Notes, Lists, Ideas and More
http://www.simplenoteapp.com/

Simplenote is an easy way to keep notes, lists, ideas, and more. Features include: a) Use it everywhere – Keep notes on the web, your mobile device, and your computer; b) Stay organized – Find notes quickly with instant searching and simple tags; and c) Work together – Share a list, post some instructions, or publish your thoughts. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.