And for Day 2 (a day late!) of #blog12daysxmas:
Notes.io
Jotting down some quick notes & sharing them couldn’t be easier than with Notes.io.  Just visit the site and start typing, no login necessary. When you’re ready to share your notes, click on the “short” button to get a shortened URL that links to your notes page. The short URL
It’s easy to share the short URL via Facebook, Twitter and FriendFeed.
Not meant for long files, there’s presently a limit of 18 KB or about 180 lines of text. It appears that longer files may be possible when they add their account features.
Handy for quickly and easily sharing meeting notes, conference session reports. Very handy for students since it doesn’t require a login.
Notes.io is a web-based application for taking notes. You can take your notes and share with others by providing the shorten url to a friend. Fast: Notes.io is built for speed and performance. You can take notes quickly and browse your archive. Easy: Notes.io doesn’t require installation. Just write and share shorten link! Short: Notes.io’s url just 8 character. You’ll get shorten link of your note when you want to share. (Ex: notes.io/q)
(via: Free Technology for Teachers)