Earlier quoted context omitted.
Please don't post links through bit.ly and other URL indirection sites. It hurts the web by making it much more difficult to follow the link in the case that an intermediary goes out of business. Hacker News and your post will probably be around in a few years, but will bit.ly? (What's their business model, exactly...?) For future reference, the unshortened version of his link is: http://www.stanford.edu/class/cs221/…
Not to mention the real URL shows that the link is going to Stanford whereas I have no clue whether the shortened link is going to Stanford, an XXX site, or rick rolling me.
Not to mention that the domain .ly is controlled by Lybian dictator and terrorist supporter Mommar Qaddafi.