Online social networking website Twitter set yet another milestone Sunday with a message posted by a Japanese user becoming the 20 billionth tweet of the four-year-old website.

User 'GGGGGGo_Lets_Go' from Tokyo tweeted something hard to translate. The graphic designer said it was part of a conversation between him and someone else about a third party.

But moments later he was inundated with congratulations from Twitter users across the world soon after the website announced it surpassed the 20 billionth tweet, New York Daily News reported citing PC Magazine.

'It looks like I posted the 20 billionth tweet. I'm getting replies from people all over the world. It's scary. What are the chances? Maybe I'm going to die. Is it more amazing than winning the lottery? I thought it was a joke,' he told Computerworld.

GGGGGGo_Lets_Go tweeted: 'I'm grateful and humbled by those who are visiting because of my 20 billionth tweet. Be warned, I tweet a lot about baseball.'

Twitter hit the 15 billion mark two months ago. Its 10 billionth tweet was only five months ago - four years since the website started.

Since mid April, there were 105 million registered users, but approximately 300,000 new users register every day.

In February, the service said it sees about 50 million tweets a day - roughly 600 tweets a second. The website hit an all time high at the end of the Japan-Denmark World Cup game: 3,282 tweets per second.