Good article, definately something I'm interested in - I get tearing if I don't enable vsync, but noticable 'input lag' when it is enabled.
I don't think we can triple buffer in TF2, so really it's a "look, it could be this good. but it aint" article. Good read though, while I understood vsync before I now understand the double/triple buffering issue much better. I'll definately keep my eyes open for a triple buffering option in games from now on. Cheers
edit. apparently it's an option available in L4D - will have to check it out