[theorique]

almost sends a negative signal.

Could you expand on that? Is there some common feature of people who have completed nanodegree courses?

[ralusek]

I think the negative signal is that they think it's worth mentioning. It's like if you go on a date with someone and say "you know, I have to tell you, I've kissed someone before." They're probably going to be concerned that this is notable information.