Googler Matt Cutts tweeted a Chrome tip a few days ago that made me switch from the stable build to the developer version of Google Chrome. In it you can right-click on a tab and choose “Pin tab” from the menu. Like Firefox’s FaviconizeTab extension (a favorite when combined with Better Gmail 2 and the PermaTabs extensions), that option shrinks a tab down to only its favicon and sends it to the far left, which saves you tab bar real estate. Note that pinned tabs do not persist between Chrome sessions.
Now that I’ve been spending a lot of time in Google Wave, I’m spending a lot more time in Chrome (because, you know, I don’t use enough Google products). I miss my Firefox extensions, but in Chrome’s dev version there appears to be extension support. Guess I should look into porting Better Gmail 2 and friends. In the meantime you can get early access to the developer version of Chrome here. (Thanks to Matt for the nudge to transition to Chrome’s dev channel.)