The copyright claim seems unsupportable in the first place. As far as I understand, a simple list of things that fit in a category does not meet the minimum originality requirement. See: http://en.m.wikipedia.org/wiki/Feist_v._Rural
It also seems like it would be trivially easy to compile a similar list from linkedin.
Data isn't copyrightable. The format is, but the data itself isn't. Yes, it would be nice to sanitize a list. And yes it would be nice to not actually use real names with real addresses. But no copyright violation here.
It also seems like it would be trivially easy to compile a similar list from linkedin.