Google Chrome has a flexible URL bar. Some applications and users may not really need it and there is now an option to kill it. The effect is a 30 pixel gain in vertical space and transforms the standard viewing window in Chrome into a full-screen view. The downside: There is a security issue as users will not always notice the URL and are now much more exposed to phishing attacks, for example and not aware whether they are on a secure or unsecured website.
Instead of showing a URL bar permanently, the user will have to double-click a tab to see a shortened version of the URL that is displayed with a hover effect, if you move the mouse pointer away from the field, the URL bar disappears. The feature has to be enabled via a flag in a recent Canary or nightly build version of Chrome 13. To activate the hidden URL bar, users will also have to right-click a tab and select ?Hide the toolbar?. Besides killing the URL bar, the new feature also moves the tools menu, hides any extension and introduces new back/forward buttons. To open a tab URL bar, click the tab once.