I have three different accounts with 37s: two business Basecamp accounts and a personal Backpack account for GTD. Until now, it’s been super annoying to keep logging into every single one and keeping them in different tabs.
37signals now offers Open Bar, which works something like this…
1. Set up an OpenID account at http://www.myopenid.com
2. Login to each 37s account and click “Use OpenID” instead of using a username/password
3. And that’s it, now you can just switch between accounts by choosing the account at the top of the window
Excellent.