This extension lets you customise the title of any tab.
This extension lets you change the title of the current tab to something more descriptive. You can even 'lock' a title to a tab, even if you navigate to a different page! Please note that this will not work well on websites which dynamically change the tile of the page, or only change parts of the page while navigating (e.g Facebook), or if you type a new URL in (but I'm trying to find a way around the last one)
Chrome Extensions cannot affect any pages that are part of the Chrome Web Store, so don't forget to open another web page before testing it!
Permissions - I realise the permissions required are quite broad, unfortunately this is required to run the necessary code on any tab. The source code is available for public inspection at http://github.com/alexbate/RenameTab