Originally Posted by mattbarton.exe
How long do you feel comfortable sitting there watching a video on YouTube, even if it's something interesting that you enjoy?
Google Talks usually last well over 1h, which is a bit daunting. Fun stuff usually stays around 20min. After a quick survey, is seems me to me like there are some lengths that have a special significance: below 20min, 50min, 70min. These show up regularly on TV and Youtube.
Anyway, I don't think it is that important. 25-30min sounds cool.