[voiceofunreason]

> I've seen like bilion discussions about TDD and I still dont understand why is it so overhyped.

My guess: because it picked up a lot of momentum from the OO "patterns" community, and that gave it a lot of immediate reach and credibility.

Beck and Cunningham already had an audience of their own, and TDD also promoted Martin Fowler's ideas (pulling in his audience), and Robert Martin jumped aboard early as well (pulling in his audience).

The cynic in me notes that the Smalltalk community needed something to do, as it had by then become clear that Java was going to win that market.