A Swiss footballer learned the hard way that reckless blogging could earn him a quick ticket out of the ongoing London 2012 Olympics.

The Associated Press reported on Tuesday that Swiss soccer team member Michel Morganella has been voluntarily sent home by his country's Olympic team official following his Twitter post that reportedly labelled South Korean soccer players as 'trisos'.

Trisos, AP said, is a slang widely used by French speakers in reference to a person with Down's syndrome.

Switzerland's Olympic mission chief Gian Gilli called the irresponsible remarks from Mr Morganella, which were posted after his team was trounced 2-1 by South Korea on Sunday, as both insulting and discriminating.

"Michel Morganella ... violated the dignity of the South Korean football team, as well as the South Korean people," Mr Gilli said in a statement during a news briefing.

He noted, however, that Switzerland's Olympic committee was under the impression that the Swiss athlete was provoked into voicing out his disparaging comments, which also threatened: "I am going to batter the Koreans, burn them all."

The tweets were later deleted and Mr Morganella issued a public apology for the slip.

Also, Mr Gilli stressed that amidst the circumstances surrounding the incident, "the Swiss Olympic Committee and Swiss Football Association condemn Mr Morganella's actions to the fullest."

The Swiss official disclosed too that Mr Morganella was already out of London as he reads out his statement.

Prior to Mr Morganella's sudden departure, Greek officials also booted out one of its track and field bets for tweets that were deemed racist and specifically targeted Africans.

Australia has also meted out punishments for its erring athletes, who displayed questionable behaviours weeks before the London summer games.

The controversies have highlighted the wide reach of the microblogging site, which as of June 2012 counts more than 500 million active users worldwide.

Twitter's popularity not only provided a global platform for forum exchanges but also gave rise to posts that were made out of sudden burst of emotions that at times were irresponsible, insensitive and hurtful.

As the technology afforded a useful tool for freedom fighters to coordinate their campaigns, as what were seen during the mostly successful Arab Spring, Twitter was also unfortunately employed in peddling ideas and emotions borne out of anger, just like what happened in London.