Xmarks is one of those FireFox plugins that I’ve been using for ages. I mentioned it in my one of the first FireFox tool overviews and I still find it awesome. With some (arguably) great “social” features added Xmarks has turned a cool search engine as well. I find it quite relevant and precise. Sure, the database is not as huge as Google’s but what it currently has is the best of the best. Xmarks search feature is based on its users’ preferences: The rank of each site is defined by how many people bookmarked the page; The topic if the site is defined by the tags a surfer used to save the page. Additionally, with the most recent update, Xmarks developers have introduced extra ratings and reviews from the FireFox status bar. Thus, run by people, the tool is still amazingly precise. Here’s how you can use it to locate relevant blogs in your niche (and possibly consider them as link targets); Find more “similar”