when i want to log in to fb i open an incognito window. i haven't looked into this myself but the assumption is that cookies from incognito will not leak into my normal session.

it would be great if chrome allowed users to create a separate "sandboxed" browser session in each window. i'd like to maintain just one session for each service i log into, including google/gmail.

hmm, maybe that's why they haven't implemented this.