Is widgetbait no longer valid at all according to the new quality guidelines?

[RyanKent]

How likely is it that someone who runs a spammy site will freely link to your site? Even if one or two site owners take such an action, it is unlikely to spread.

It is good that you are improving your awareness related to links to your site. If you are a legitimate site owner earning natural links, you have nothing to fear from Penguin or Google.