The woman who secured a shot-put gold over New Zealand favourite Valerie Adams is at the centre of the Olympics' latest Twitter controversy.

Belarusian Nadzeya Ostapchuk, who won gold yesterday in London, is also the latest athlete to be accused of doping.

The allegation came from British discus thrower Brett Morse, who failed to qualify for the Olympic final.

"I've had a bad day but it could be worse,” he tweeted overnight (NZ time), just hours after he failed to make the final.

''I could look like Ostaptchuk [sic]."

He then posted a tweet accusing Ostaphchuk of doping, according to media reports.

The tweet was later deleted.

Morse's agent Jamie Baulch said Twitter was a ''dangerous game'', according to a Wales news website.

''People watch you on Twitter, especially at the Olympics ... You post something and think a couple of your friends are listening.

''He has taken it off immediately and he is obviously disappointed in himself and I know he is going to be very careful with what he says in the future.''

Twitter was barely on anyone’s radar during the 2008 Olympics. Four years later and the 2012 event has already been dubbed the Twitter Games.

But it seems that some athletes are letting their fingers do the thinking.

Swiss football player Michel Morganella was expelled from the Games by his own team after tweeting a racist comment about the South Korean team.

His Swiss team responded by saying the tweet "gravely insulted and violated" the dignity of South Korea after his team's 2-1 defeat a day earlier.

Triple jumper Paraskevi Papachristou was also thrown out of the Greek team before the Games started for a racist comment regarding African immigrants in her country.

Adams settled for silver yesterday, with the gold going to Ostaptchuk. The world champion has expressed her disappointment with the loss, and has said she wasn’t as prepared as she should be after the New Zealand Olympic Committee failed to register her.
 
But she hasn't tweeted anything.

Adams must be one of the few athletes without a Twitter account, which may be the safer option, if these Games are anything to go by.

- © Fairfax NZ News