On: A source for this picture?

[mikeryan]

multiple high ratings for the same app coming in over a short period of time via the same external IP or GPS location?

[mef → mikeryan]

The IPs would be different with different SIM card vendors. The GPS location can be easily disabled on the device.

[waterlooalex → mikeryan]

You could avoid that by 1. having many apps up at once instead of just one. 2. Probably isn't hard to use a proxy for each device.

[pimlottc → mikeryan]

Those iPads could easily be routed through different proxies.