The concept of preventing a dilution of discourse and output quality by intentionally maintaining a degree of friction in the participation process is well-embodied by, e.g., the effort required to start contributing to certain critical open-source projects like the Linux kernel (think email-based communications, packaging processes, etc.). The notion of friction extends directly to aesthetics as well - consider the difference in discourse level that exists between HN, Reddit, FaceBook, and so on. There are many factors involved in the gradient, but it is worth noting that the aesthetic model employed by a system or product is perhaps the clearest external signal of that system's intended purpose. To that end, the dramatic "gameification" of relatively frictionless communication protocols appears to be incompatible with the idea of truth on a fundamental level. This also applies to the modern incarnation of popular US "news" organizations - think Fox's dramatic music and hyper-augmented hollywood-style visuals, or my personal favorite, CNN's "situation room".