"Itamar conveyed how Facebook’s Data Team used R in 2007 to answer two questions about new users: (i) which data points predict whether a user will stay? and (ii) if they stay, which data points predict how active they’ll be after three months?"

Since HubSpot's products are relevant in what I do in my 9-5, this is a interesting peak into their dev team's thoughts. It seems they use Java, MySQL, Hadoop (jealous), and test-driven development (VERY jealous).

This is good write-up of what exactly the purpose of the setDomainName function in Google Analytics.

It turns out that Google Analytics doesn't tie the account number together with the referring hostname, as I sort of thought.