Need to validate Pinax's scaling

[oppiansteve]

We should check just how well the framework functions with tens of thousands of concurrent users adding/changing and deleting data.

This will allow us to plan when we will need to go add extra caching proxy servers and an external database.
We probably can manage on a single instance for v1 without too much difficulty, but it is very nice to know when we are approaching the limit for 'engaging performance'.