Ever wonder what the script
popularity-contest that can be found in
Well it is a script that periodically anonymously sends applications use statistics to Ubuntu so that they can decide what programs are most useful and should be included on the Ubuntu CD or be automatically installed.
It is not enabled by default, but if you want to help out; go to
System->Administration->Software Sources and select the
statistics tab, here you can check or uncheck for submitting statistical information.