BuzzStream for Link Building allows you create records for People, Media Outlets and Articles that are tied together.
As an example Let's look at the record for Dan Green of Blogthis.com and the article "BuzzStream - Outreach That Scales".
People records are intended to contain person specific information. Here I have Dan's record and track his person specific contact info such as his personal email address, twitter id, and phone number. Dan is connected to the Media Outlet record for Blogthis.com. In the future if Dan creates a second website I could add that new Media Outlet his contact record. In short a Person can be attached to multiple Media Outlet records.
Blogthis.com is Dan's website. I've created a Media Outlet record for this website. The primary website of a Media Outlet record is the domain that BuzzStream collects metrics for. Blogthis.com is associated with Dan Green's People record. If in the future Dan hires Steve Smith then I can add his Person record to Blogthis.com Media Outlet record. In short a Media Outlet can have multiple People tied to the record.
Dan wrote an article about BuzzStream titled ""BuzzStream - Outreach That Scales" found at blogthis.com/buzzstream+outreach. When I add the article to BuzzStream it ties it to both Dan's Person record and the Blogthis.com Media Outlet record. Only one author can be associated per article.
Additional Notes about People, Media Outlets, and Articles:
People and Media Outlets can be assigned to multiple projects. People and Media Outlets are assigned separately. A Media Outlet can be in a project but the People associated with a same Media Outlet do not have to be assigned to a project. Likewise you can assign a Person to a project but not the Media Outlet they are currently associated with.
Additionally all Media Outlets and People can be assigned to a different user in each project.
Articles are specific to a Person and Media Outlet. They are also project specific.