One point that Bill Slawski makes is:
Assessing the credibility of content and people on the web and social media: Modeling author identity, trust, and reputation
This is something I mentioned a few weeks ago on a different thread. I suspect that author names could be profiled to determine their credibility (i.e., are they posting articles on a commercial site then posting in hubs, or vice versa?)
Some of my writers have historically published content on other places, including some of the hubs like Buzzle or Ezinearticles. I think by having their name on my site could be lowering the credibility. I might be better off without even having the author's name. I have always selected writers who do good research, but you know how freelance writers work...they write for many people and write everywhere. It's perfectly reasonable, but unfortunately it could be guilt by association.