An Australian man who unwittingly found himself embroiled in a conspiracy to oust US President Barack Obama has vowed to be more careful about what he posts on the Internet.
Adelaide public servant David Bomford was plucked from obscurity when US political campaigners released a copy of a birth certificate at the weekend that supposedly showed Obama was born in Kenya.
The campaigners, known as "birthers," point out that if Obama was born in Africa, rather than Hawaii as US records show, he would not be eligible to be president, since only natural-born US citizens can hold the top office.
However, the document they released turned out to be a fake based on a copy of Bomford's birth certificate that he had posted on a friend's genealogy website.
Bomford said it was hard to believe "a grey-haired old guy sitting in a corner in quiet old Adelaide" had been swept up in a push to unseat the most powerful man in the world.
"It is interesting someone from here being involved in a conspiracy -- that is so funny," he told public broadcaster ABC.
Bomford said he knew nothing about the "birthers'" claims.
He said the fake Kenyan birth certificate contained his personal details and was clearly based on his own South Australian document.
"It's definitely a copy of my certificate. It's so laughable it's ridiculous," he said.
Bomford said he only expected relatives researching their family tree would be interested in the document when it was posted on the Internet.
"I was very, very surprised that anyone would even find it on the net," he said. "I'll be certainly contacting my friend who runs that web and asking him to remove it."