A note to Google:
It's one thing to change some stupid social network site that you might log into once or twice a day to check on some goofy pictures of your friends' drunken orgy. The makers of Facebook routinely change the interface of their website without a care in the world causing minor complaints and annoyances across the globe. But you get use to them, because at the end of the day, it's just some social fun site that doesn't matter.
Gmail on the other hand, is the center of the universe for me. For one thing, I have it open at home and at work ALL THE TIME. While I might check Facebook for about an hour every day, I have Gmail on 24/7. I also have GReader on 24/7.
Google+ -- not so much because as a social networking tool, it's unavailable to me throughout my work day. By the way, guess what happens when you're using GReader and Google+ is blocked? It becomes a generic reader like every other reader available online. And unfortunately, with all the GUI changes, this one looks like SHIT.
So the next time you decide to make significant, sweeping changes to the interface that we've all come to know and love, and stare at 24 hours per day (Yes, I dream in Gmail), think again. Think AGAIN.