Since this is in terms of "engagement", can anyone define just what that term means?

Working hypothesis: it's the number of times the object is referenced on each of the monitored social networks.

Yeah, which is kinda not a great metric - I'd be more interested in knowing what percentage of people watched the whole thing.

Watching some TED talks is a long standing item on my todo list but I'm overwhelmed by choice!

barry schwartz has a TED talk about the paradox of choice!!!

I just love the talks from Robert Full. That guy has some really nice ideas about robot locomotion. Also if you are interested in robotics in general try Dennis Hong: My seven species of robot

Since the Google Doc is slow at the moment, here is the source data behind a PostRank blog post exploring the same theme:

http://blog.postrank.com/2010/05/and-the-most-engaging-ted-t...

HOWTO: 40 lines of Ruby to scrape the PostRank API and output a CSV file which has since been uploaded to Google Docs.

Thanks for this resource, whoever compiled this is a godsend. Extra plus for wanting 0 benefit from it (besides maybe Hacker News karma?).

What is most interesting to me is how unsophisticated myspace users are compared to the other social sites.

I got this on the top of the document:

Viewing in simple list mode due to high traffic to this document.

I am just hooked to TED talks. I was pointed to it by a friend from Design school. They indeed are inspiring. But the problem surely is they are not properly categorized. Sure they have philosophical themes but it would be better if they had a tagging system so we can have tags like robotics, brain and evolution. That would really make my day.

The talks are tagged: http://www.ted.com/talks/tags