swa66 - 12:26 pm on Aug 23, 2013 (gmt 0)
Are you 100% sure it's the site owner asking the link to be taken down ?
If you reply to confirm is the email answered ?
Does the email come from the domain itself ?
If not I'd answer you only respond to requests that are confirmed by firstname.lastname@example.org.
Competitors (and their shady SEO), might well be using the "Google is evil" umbrella to mask their own evil side in destroying incoming links to competitors.