Ask HN: List of YC Start-ups Sorted by YC "Semester"

I'm looking for a list, even if its not 100% complete, of Y Combinator funded companies, with the list sorted by Y Combinator "semester" (YC Summer 2007, YC Winter 2009, etc.).

My goals with this list are two things:

1) Professional networking. Given the choice, most of us would rather do business with a YC-funded company than non YC-funded company. Networking this way supports these companies and gets out foot in the door for business opportunities with start-ups.

2) Debugging. Knowing some details about the DNA of Y Combinator funded start-ups lets us know what Y Combinator is generally interested in, what's been funded already, and also lets us follow the experiences of these companies.