If you are by any chance a directory editor, you probably receive many communications from directory submitters that would like either their directory listing updated or removed altogether. A lot of the removal requests are due to historic Google algorithm changes that prevent linkspam, which has led to a lot of confusion among webmasters in the past. To help clear up the issue, as well as providing a timely way for website owners to de-associate their site from another, the search giant Google added a “Disavow Tool” to their Webmaster Tools interface. If this is something you didn’t know about, you might find it extremely useful.
“If you’ve done as much work as you can to remove spammy or low-quality links from the web, and are unable to make further progress on getting the links taken down, you can disavow the remaining links. In other words, you can ask Google not to take certain links into account when assessing your site.”
Even though this is a great tool from Google to help you remove unwanted links, it is highly recommended that you still proceed with the various processes that you would use to normally remove a specific link, such as e-mailing the web administrator to take down the link or by manually taking the link down yourself if you are provided the option to. Only use this tool if you are really sure need it, because it won’t always be as effective as completely removing an unwanted link through the proper channels. Also, be sure to not disavow links from your own website.
In addition, it’s good to note that it may take some time for Google to disavow the links. It is highly recommended that you should wait approximately two to three days prior to submitting a reconsideration request after an original disavow request has been submitted. The information that Google uses from this tool will be incorporated into its index as it continuously recrawls the web, ensuring if everything is done properly your website won’t suffer any penalites or ranking issues as a result of links you no longer want as part of your strategy.