Bad links are the backlinks which are considered “unnatural” by Google. These are links from banned sites, links from link exchange network services or even some of paid links. We have checked more than 2000 sites so far while testing our service and we are using more than 20 different parameters to find the links which really could harm your website.
you can use these sites and softwae to check or find your bad links.
linkquidator.com
brokenlinkcheck.com
deadlinkchecker.com
you can use these sites and softwae to check or find your bad links.
linkquidator.com
brokenlinkcheck.com
deadlinkchecker.com

