Many organizations on both sides of the aisle in Washington share sample text to use when contacting their elected officials, so repetition of text would generate many false positives.
Do you think that creating a set of heuristics that eliminates astroturf without eliminating legitimate citizen complaints would have been possible? If so, what specific heuristics would you have used? Should unelected IT staff at the FCC be able to determine what constitutes a “valid” submission?