This section graphs the performance
of the service as measured by the
Value Added Monthly Index (VAMI)
against the performance of the
selected benchmark. The VAMI is
a very simple way of assessing a
service's results, as it measures
the performance of a hypothetical
investment of $1,000 over time.
You
can also select a different time period by clicking on
the appropriate button. When you do, the results for
both the service and the benchmark are recalculated and
displayed for that period, so you can accurately compare
the performance of one with the other.