In late 2012 Google launched the disavow tool so that webmasters could report spammy links pointing at their site and discount them. It's been nearly 2 years since this tool has been available and it seems like the information on it is quite scarce. When the tool was first released many were opposed to using it ever, I'm sure some people still are. It seems like a few SEOs have changed their mind and now advocate using the tool under some circumstances. What I'm wondering is, have any of you used the Disavow tool and what were the results? Have you used it on sites with mixed white/black hat link profiles? I'm hoping we can get a poll with everyone's experience on this tool.