A number of people in the Eclipse community have been trying out Google+ and some good Eclipse related discussions are starting to happen there. Since many of us have multiple Google accounts (maybe your company uses google apps, or you have your own google apps for a custom domain), switching between accounts starts to become a real problem.
Of course, you could run multiple browsers (say Firefox for personal mail and Chrome for corporate mail), but this is not an ideal solution. Last week while struggling with this problem I found this little helpful hint.
Now you can navigate to your Google accounts page and enable multiple sign-in.
This is obviously not Eclipse related, but I hope this helps a few people.