So Yahoo shutdown their web based bookmarking tool. If you want your bookmarks back, you're going to have to install the Yahoo Toolbar. Which is kinda a useless solution as it will only work on desktop browsers. Too bad if you want to your bookmarks on your mobile.
Solution? You should be using saved.io - it works in any browser. Your bookmarks are stored in the cloud so you can use different devices and still have access. And there is no toolbar, app, extension, addon software needed.