Thanks for the shortcuts Tofi… I knew a couple, but the list is useful.
I’ve just corrected some items where the original author refers to parts of a wave as a wave itself. This can be confusing.
"Learn Wave’s Keyboard Shortcuts
Every good webapp has a full set of keyboard shortcuts for getting around and performing the most common actions, and happily Google Wave is no exception. While Wave is still missing common shortcuts (j/k, please?), there are a few you must know now. Here are the ones to learn first:
Arrow keys: Move up/down within a list of waves, and left/right from inbox to open wave panel with your arrow keys.
Spacebar: Go to the next unread wave in a list
Ctrl+E: Edit a selected wave blip/message
Shift+Enter (in edit mode): Finish editing your wave blip/message; equivalent to clicking the “Done” button
Enter: Add a reply to a selected wave blip/message directly under it
Shift+Enter (in view mode): Add a reply to the bottom of a list of waves blips/messages"
Google Wave 101 - Wave - Lifehacker