I'm using Evernote more to capture information. I had 2 major complaints about usability, and just stumbled across solutions to them, so thought I'd share them. These tips apply to the web version of the product.

1. The default behavior when pressing the Enter key is to create a new paragraph, with extra spacing. If you just want a line break, use Shift + Enter.
2. To create a bulleted list within a note, be sure to start it on a new paragraph and then click one of the bullet icons. So you can't have a bulleted list start after a line break. Oh well.

Now if we could just get the iPhone application the ability to edit pre-existing notes as opposed to appending to them. It's been "coming soon" for almost as long as gmail was in beta!