But perhaps the others did? If 'Steve Jacobs' imported his contacts and you exchanged emails with him, LinkedIn apparently becomes aware of that relationship. In fact:
> Tami has a total of 5 connections, lives in Seattle, no public company or title listed, but we just happened to exchange a few emails a couple days prior regarding some questions I had about software her company sold.
Tami probably used the imported contacts feature here, and that's how LinkedIn would know.