London, Sep 14 (IANS): The British Library's advertisement outside its building has triggered a debate over the use of 'comma' on social media. It reads: "Shops. Cafés. The whole wealth of human knowledge, endeavour and experience to date. Events. Exhibitions."

The sign was shared on Twitter by Peter Hornsby. The post went viral and netizens pointed out that the British Library should have included a 'comma' after the word endeavour.

Few wrote in favour of the library, while others said there should be a 'comma' after the word endeavour. "Love it! But where is the Oxford comma?????," said a Twitter user.

Another wrote: "The lack of the Oxford comma is killing me."

The post has gained around 21,000 likes and over 3,400 retweets.

"I don't think an Oxford comma is necessary in this particular sentence; it isn't ambiguous. Besides, isn't it Americanism?" posted another.

Meanwhile, the British Library has not responded or tweeted anything in return.