Scott Rosenburg has a nice post on Outliners and ECCO Pro here.  Comments are full of interesting/using thoughts too.

Nice guide / summary here.

In my opinion, eBay's most unique and hardest-to-duplicate key differentiator is (or, was) the fact that you can find anything there -- especially items you can't find anywhere else, especially used items that are no longer made. 

They're also known for being a good "cheap place to get things," but frankly I think that reputation / advantage is fading, as search technology grows increasingly robust.

SO, why is the CEO of eBay pursuing a strategy that basically pushes the site toward being more like Amazon, or an Internet Mall-like Walmart?  In the process, they are are alienating thousands of small-time, "one-of-a-kind item" sellers, which are the key providers of what I am suggesting is their strongest, easiest-to-defend competitive advantage.  It makes no sense to me at all.

This from Harvard:
http://www.wjh.harvard.edu/~amschach/research.html

Entrainment in birds and primates

Whether in a military march, an urban club or a tribal dance ritual, humans spontaneously and intuitively map sound to movement; this synchronization to an auditory beat is referred to as entrainment. Other primates do not appear to share our propensity for beat perception and synchronization: our closest living relatives, chimpanzees, do not entrain their movements to a drumbeat even after extensive training. However, our work suggests that some species of birds may entrain to auditory beats. We have found numerous examples of entrained movement in birds in internet databases, and, in addition, have collected data from an African Grey parrot (in collaboration with Irene Pepperberg).

See sample videos of birds entrained to music.

Open my account, baby....