That article was pointless to someone who is not currently in YC. Things like "Presentations were better than I've seen in the past." And he does not tell us how they were in the past or how they are now.
And the rest are some mediocre presentation tips, totally unrelated to YC.
I didn't realise you actually read this site, so I'm sorry for being a bit rude. I thought it was some big name reporter who did not give an owls hoot what others said.
The tips you give are common for people who often given presentations, but perhaps for the hacker crowd here, they could be quite useful.
And the rest are some mediocre presentation tips, totally unrelated to YC.