IF AN EXPERT SAYS IT CAN'T BE DONE GET ANOTHER EXPERT.
Google Chrome finally supports "Chrome profiles"
Finally useful tool for people who share their computer with other ORwants to have multiple profiles over the same computer for testings.
Its very easy to create new profile and manage the existing one:
Go to "Chrome control" menu
Go to "Personal Stuff"
Now you can manage your accounts through the icon on the top left (right for RTL languages) by clicking and choosing the relevant user.
Creating new profile doesn't mean that your password are safe, as I noticed that my users and password are still available on other profiles as well!