We're all familiar with syncing bookmarks and save-for-later web services like Instapaper, but it's not often that they come with a full web component. Yahoo's hoping to hit the proverbial two birds tonight with Axis, which combines a desktop web browser extension (your choice of Chrome, Firefox or Safari) with a mobile app on the iPad and iPhone. You can bookmark any page and get at it later through a common portal -- hence the Axis name. That unity idea also extends to the idea of browser searching, where you'll see both trending topics as well as immediate answers and visual thumbnails of the top search results. Mobile users can share content through e