helenp - 8:17 am on Jun 2, 2013 (gmt 0)
you are admitting guilt
Sure, Google's already caught the person with hands in the cookie jar, that's why the site has been dinged. The disavow tool is supposed to be used for spammy links that *you built* (or have had built), and have not been able to remove by normal means.
And what if you have spammy links built for more than 10 years ago, in a famous old linkfarm and is not having any penalty and ever had?
I have some thats more than 10 years old, checked the backlinks in WMT and have some recognized as backlinks, some were discovered in 2006, but some wasnt until 2011, before google just ignored them.
Should I disawow them?