The median American worker is age 42. The median age at Facebook, Google, AOL and Zynga, on the other hand, is 30 or younger. Twitter, which recently got hosed in an age discrimination lawsuit, has a median age of 28.
Mayer’s system ... requires managers to rate their reports on meeting their goals from one (“misses”) to five (“greatly exceeds”), and for at least some percentage of them to be in the bottom buckets, regardless of whether any truly “missed,”
Numbers are important. Number of users is important. So are lots of other things. Different services create value in different ways. Trust your gut as much (or more) than the numbers. Figure out what matters and build something good.