Ad targeting, what's hot in your network, friend recommenders, etc. are all esse... | Hacker News

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		wheels on Oct 14, 2009 \| parent \| context \| favorite \| on: Why are Facebook, Digg and Twitter So Hard To Scal... Ad targeting, what's hot in your network, friend recommenders, etc. are all essentially ranking problems. They're moving more in that direction, definitely.

jfarmer on Oct 14, 2009 [–]

Word. True. I knew there was something I wasn't thinking of.

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