[movingahead]

This and all those other places offering a Google Oauth option prevents me from logging in to multiple accounts on my main browser (Chrome). Although if you do a Google Oauth, it will let you select which email you want to use. I hardly use anything else apart from my personal Apps account, and hence it makes sense to have only a single login on your main browser.

[axylone]

If you set up multiple Chrome users (Settings > Add New User), you can log into multiple google accounts at once.