Fortnightly articles/reports posted by Monsieur Guru Nielsen himself. Some of these are pretty good, personally I think some of them are just plain stupid.
An example of taking things too far: in the most recent alertbox, Nielsen extrapolates his calculated statement that the companies he studied which would “spend $3,042 per employee annually to cover time spent on the sixteen tasks we measured” to mean that if we improved intranets to the best ones they saw in their tests, we would “save the world economy $1.3 trillion per year”… come on dude, seriously. You so can’t make that assumption.