[p4bl0]

What I use the most is [j]/[k] to move between email from the inbox while using [x] to select some messages which i [shift]+[i] to mark them as read and the [e] to archive. I think I easily do that with half of my emails for which reading the subject (and sometimes also the little preview) is enough to know that I don't have to read them.

This is what makes Gmail very powerful for me.

[BrandonM]

I totally agree, except that I tend to use [y] to archive, since it also does the "right thing" from views other than the Inbox (e.g. removing label "Todo" from selected emails when viewing all emails with label "Todo").

I also use [ and ] a lot. From message view, they archive the current message and immediately move to the previous/next message in the current list.

[rhnoble]

I use J/K to browse so much that I sometimes forget it's not built into all websites. "What do you mean I can't hit the letter "O" to open that link??"