Douglas Merrill from Google talks about what it takes to build a search engine for the web.
Besides that what strikes me as interesting is their choice of languages “focusing” (he didn’t exactly say that, but it’s what you understand, when he says they won a prize for it) their efforts in machine translation on: Arabic and Chinese … o.O
The 28c3 is about to end. 🙁 … but there have been some really interesting talks (as every year 😉 ) … and the best thing is they were quite quick with the recordings this year. Most of them were available a few hours after the talk on the 28c3 YouTube channel … so enjoy 🙂