The article is pretty much on point. It is quite possible to make a Digg-ish like site using an opensource CMS and a handful of plugins. Of course the article doesn’t discuss making your site scale like Digg. That requires getting some smart people like Elloitt White and Timeless and a bit of database sharding not to be confused with the embarrassing act of sharting like Sandy Lyle in Along Came Polly. I guess it justs goes to show what can be accomplished using LAMP with a bit of data layer tuning and the liberal use of gradients. Having well structured data in an RDBMS can drastically reduce your need for OO programming techniques and allow you to write more simple (and perhaps elegant) procedural code in languages like PHP. Thus allowing one to rapidly design cool sites like Digg while simultaneously reducing time to market and increasing ones bank account exponentially, Ka-Ching! Makes you wonder why you spent all that time learning Java or C++ huh?