Plumster, thanks for the cool find! I'd never heard of this.
And... I have this in both ears, though not too severely (worse on one side). I remember noticing it in my mid-40s (ten years ago). I assumed it was from sleeping on my side, which sometimes folded my (detached) earlobes over.
I have mild Raynaud's, which also might be a cause – I'm guessing (and hoping, since the alternative is non-fun).
Having just gone into PubMed, I'd say this is actually kind of scary. The correlation with vascular problems isn't extremely tight, but it does appear to be real.