Scenario:
We're a software as a service company and several of our clients use our site for posting their company "widgets".
One client has a link to our site (specifically to their corporate page on our website) within their universal top navigation. The link in their nav says "widgets" and points to their page on our site.
Since it's in their top nav across their site, that's over 100,000 pages with links to the one page on our site.
We aren't trying to be spammy, it's just the way things work out.
So what are people's opinions? Does this hurt us? I know it doesn't help us for SEO, but is it worth disavowing? If multiple clients do this will we be penalized?