Aussie prospectors are scrambling to find $10,000 buried somewhere in the Internet.
Clues to the treasure's location will be release at random starting tomorrow via Twitter.
The hunt requires Internet Explorer 8 and is the latest move by Microsoft in the Web browser wars between the likes of Mozilla Firefox, Google Chrome and Apple's Safari.
The first surfer to stumble on the find will win the loot, Microsoft says, adding to “get rid of [Firefox/Chrome], or get lost”.
The gold is a “cleverly concealed webpage” viewable only with IE8. Microsoft assures the winning prospector will know the loot when they see it.
Twitter treasure hunts have become a novelty this month: a New Zealand man offered up a $4000 diamond engagement ring as Twitter treasure after he was rejected by the woman of his dreams, while singer Lily Allen used Twitter to give away free tickets during her world tour, including one instance where a fan broke a finger after scrambling for tickets stuck under a beach table.