Google Reader Blog: Earlier this week we pushed out a new release of Reader. Most of the changes are under the hood and should make for a faster, smoother experience. However, there were a few user interface tweaks too. My favorite is support for the space keyboard shortcut.
http://googlereader.blogspot.com/2005/10/new-reader-release.html
Randy: What? My favorite Web-based RSS reader is even better? Love the spacebar shortcut. Bye-bye j.
Update: After a few moments of use, I realize I like the j keyboard shortcut better than the spacebar.