What ORM do stackoverflow use with their ASP.Net MVC project?

Question

What ORM do stackoverflow use with their ASP.Net MVC project?

Answer 1

Linq To Sql

Answer 2

http://blog.stackoverflow.com/2008/09/what-was-stack-overflow-built-with/

This will go into more detail concerning the stack that StackOverflow uses (including it's ORM).

Answer 3

Currently trying out LightSpeed for use with MySQL. It's pretty decent, although I have run into a couple niggly bugs. Apparently version 2.3 is going to support MySQL quite a bit better.