But they still add the "on behalf of" line. I understand that this is technically correct, but for some of us, it's unwanted behavior...

It doesn't work for me. I successfully authorized and accepted, but do not see the new drop-down arrow.

I've uninstalled all Chrome extensions (I had a few that interacted with GMail) and still no way to switch accounts.

Hari Nidumolu, if you're by chance reading this: anything I can look for in Firebug/ChromeInspect to try to debug?

It needs around 30 minutes to be activated. It is working for me.

Do you have offline Gmail enabled? I think that has some weird side-effects. Also, you might try enabling multilogin if you haven't already.

Same for me, let's wait and see, it might take a while to activate itself.

This will be incredibly useful for all those 4-hour workweek fanatics.

Another one of those ideas that you never think of but say "duh" when it's introduced.

Would it be possible to delegate to an account ran by a web service that would then have access to your email? For instance, to do things like auto-responses, auto-filtering, etc.

You have OAUTH tokens for that. Many gmail-related webservices are using them. (Like etacts, for example)

cool, this has been available to google apps premier accounts for a while, I wonder if this means they'll make it free for the basic google apps accounts too (the only place where this would be of use to me).

It's been enabled on my basic google apps account for a couple of weeks.

Unfortunately, recipients see "sent by foo@example.com on behalf of bar@example.com" which doesn't look too professional when dealing with customers.

How is it at all different than the old

  AB/cd

you used to see at the end of letters typed by the secretary?

Do the delegated mails also appear in IMAP?