You missed a lecture, and you need the notes. Or you hate synchronizing the notes from your laptop to your desktop all the time. Or you and your friend share notes, and you're tired of opening email attachments all the time. Or you've experienced a virus before finals already once and want to ensure your notes are forever safe. What are your options? Well, let's take notes online from now on. Let's share them with others, too.
There are a couple of options I've already heard of:
All in all, each service has its good qualities.
If you're looking for a spot to store your notes and have some on your computer, some in a notebook, some on a recorder, I clearly recommend mynoteIT, as it has the most options. However, the big deal is that you need to find the one that most of your college is on, so that you can really take advantage of the actual intent of social note taking. For that, Stu.dicio.us is probably the best one, as it links well with Facebook.
But, please let us know in the comments if you use any of these services and which university/college you attend. Any Yalies out there?