The ABC says it will probably make changes to its Hottest 100 voting system after a Brisbane-based marketing expert used social media to accurately predict most of this year's popular chart.
Nick Drewe and his mate Tom Knox analysed about 35,000 Hottest 100 votes submitted to Triple J via social media sites in the run-up to Australia Day and published their own chart, the Warmest 100.
The site accurately forecast 92 of the 100 songs on the chart.
Messrs Drewe and Knox forecast all 10 songs in the Hottest 100 top 10, including five in the correct position.
The ABC said its social media voting system was a 'huge success', with 51 per cent of votes being submitted via Twitter, Facebook and Pinterest.
But the national broadcaster said it will probably make changes next year to prevent a similar Warmest 100 website being set up.
"With 51 per cent of voters posting their results on social media platforms, it resulted in a huge number of people talking about the Hottest 100 online," an ABC spokesman said on Monday.
"That interaction drove the greatest number of votes yet.
"While it does open up the poll to speculation and analysis, there are always going to be surprises and a lot of fun on the day.
"We may make a few changes to the system to avoid spoiler attempts in the future though."
There was mixed reaction to the Warmest 100 site in cyberspace, with many people welcoming it as a fun addition to Australia Day celebrations.
Others refused to view it, for fear of having the chart run-down revealed.
Bookmakers suspended betting on the Hottest 100 in the week leading up to Australia Day because of fears that punters would use the information to lay substantial wagers.
Macklemore and Ryan Lewis's Thrift Shop topped the Hottest 100 chart on Saturday - as predicted by the Warmest 100 site.