TVNZ has been forced to reveal the $400,000 it has earned over three years from text-in polls.
The figures show that revenue fell away dramatically in the past financial year, dropping from $220,223 to $57,280.
The broadcaster was ordered by the Office of the Ombudsman to disclose the amount, eight months after citing commercial sensitivity in refusing a Herald on Sunday Official Information Act request.
TVNZ spokeswoman Georgie Hills said the drop was caused by viewers turning to Facebook and Twitter to give feedback.
"It also reflects the different programmes that may have come and gone," Hills said.