blackpixel - 11:34 pm on Oct 16, 2012 (gmt 0)

"Q: Should I create a links file as a preventative measure even if I haven’t gotten a notification about unnatural links to my site?
A: If your site was affected by the Penguin algorithm update and you believe it might be because you built spammy or low-quality links to your site, you may want to look at your site's backlinks and disavow links that are the result of link schemes that violate Google's guidelines."