I made great use of that point at a Jane and israel email list Robot meet up shortly after. Now, I'd like to add my own corollary to that statement: "most of the web is short-lived". Churn on the Web After just a single month, a full 25% of the URLs are what we call "unverifiable". By that I mean that the content was either duplicate, included session parameters, or for some reason could not be retrieved (verified) again (404s, 500s, etc.
Six months later, 75% of the tens of billions of URLs we've seen are "unverifiable" and a year later, only 20% qualifies for "verified" status. As Rand noted earlier this week, Google's doing a lot of verifying themselves. To visualize this dramatic churn, imagine the web six months ago... the web six months ago Using Joachim's point, plus what we've observed, that six-month old content today looks something like this: what remains of the the six month old web What this means for you as a marketer is that some of the links you build and content you share across the web is not permanent.