Google recently added the multiple user account feature to the beta version of Chrome.
In the past some file structure hacking would have been necessary in order for multiple users to have a personalized experience in Chrome. Luckily you can start taking advantage of this new feature today by downloading and installing the beta and then following a few quick steps.
Step 1: Grab the Google Chrome Beta here: http://www.google.com/landing/chrome/beta
Step 2: After you finish installing, click on the wrench near the top-right corner and select Options.
Step 3: On the left-hand side menu, click on Personal Stuff
Step 4: Look for the Users label, and then click on the Add new user button.
A new user account will be assigned an icon and subsequently a name that fits the icon. You don't need to keep either of these choices; just select the account you want to change and then click Edit. A new browser window may open with the new account selected in the top-left corner.
(Optional) Step 5: To switch between accounts in Chrome, just click on the picture for that account in the top-left corner, and then pick a new account to use from the drop-down menu.
Added users can be removed, if necessary, at any future date. Now you can share your computer and browser, while also having a personalized experience available for each user.