Table of registered users should be available through csv file under single url

[dreamer]

Of course excluding information that may be used to identify users - just enough for organizational purposes. This way this file can be pulled by spreadsheets and automatically used to create various useful statistics; to pull such file from url in google spreadsheets for example one may use:
=importData("url")

in any cell in spreadsheet
note: google docs update this once every 2hours or so, there is no public info in documentation about this feature, but different online spreadsheets (namely: zoho) can be set to refresh data once every few minutes.