There are 1226 registered users of my workspace on apex.oracle.com. Arround 300 of those are still active. Many of those inactive accounts are using a download of My Demo Applicatiion installed localy.
If I run Google Analytics for the last 12 months I will get a nice analysis of the visits which says the following:
1. 1,001,992 Pageviews
2. 104,510 Visits
3. 9.6 Pages per Visit
4. 8.25 Minutes - Average Time on Site
These statistics do not include the clicks and visits done within the workspace while investigating the code behind the single pages. At peak times the application reaches 6000 pageviews a day.