Google is the world's leading search engine. Google also provides a wide range of free services like maps, web-based email, etc.
Google's mission is to organize the world's information and make it universally accessible and useful.
Love X-marks- not just because it syncs across devices, but your bookmark history is stored on the server as well so restoring past sets of bookmarks is is a snap! Used recover past sets today and my hours of cleaning up my dated bookmarks weren't wasted when a corrupt file reset my bookmarks across my devices. SO happy.