Often use multiple Google accounts? Obviously you will be happy to log in to all accounts at once. But to be able to do so, users must use several different browsers. That was back, most likely soon users will be able to sign in to many Google accounts in one browser. This capability is not yet officially released, but still in the testing stage. Google is currently testing the suspected center of a feature that lets users log into multiple Google accounts simultaneously in the same browser.
For example, someone who has at least four different Gmail account, can be opened simultaneously. In addition, this feature can be useful to use one browser by several users at once (eg in families). Google has not yet say when this feature was released. Internet giants are reportedly being tried on several products, including Gmail, Reader, Sites, Calendar, Code and Docs.