Provide a link to the post that you feel most exemplifies the site's educational value containing information about architectural concepts, urban planning, environmentalism, or history.
http://mcmansionhell.com/post/161514422581/mmh-does-architec...
There are many such posts (explicitly theoretical/academic) in the site's history. More importantly, the day to day "McMansion" posts actually back up the theoretical concepts expressed in such posts. Much the way we programmers use both positive and negative examples of Design Patterns.
If you are not aware -- and it seems like you aren't -- the Design Patterns movement in software was inspired by an architecture book that did much the same thing -- showing patterns and anti-patterns -- just with less hipsterism, and more examples than counterexamples.