Anybody concerned in online marketing knows that link building tools are a crucial element of success. There are many such tools out on the market, and the list will continue to grow so long as backlinks are so vital to the life of your internet presence. If you choose the free version, you can see how many unique links you get to each page of your website, as well as the rank of the page and of the overall domain. The paid version allows you to research other internet sites as well, such as those of your competitors. You can see how many links they get, the quality of the links, and the keywords that they are targeting, all of which is awfully useful in your own campaign. It allows you to define the number pages within a domain that are indexed by slurp, Yahoo’s own search engine crawler, and research applicable data relating to inbound links. You may also export the results you find useful into a TSV file.