An online entrepreneur says that poor spelling is costing the UK millions of pounds in lost revenue for internet businesses.
Charles Duncombe says an analysis of website figures shows a single spelling mistake can cut online sales in half.
Mr Duncombe says when recruiting staff he has been "shocked at the poor quality of written English".
He says the big problem for online firms isn't technology but finding staff who can spell.
When recruiting school and university leavers, Mr Duncombe says too many applications have contained spelling mistakes or poor grammar.
"Some people even used text speak in their cover letter," he says.
Even among those who appeared to be able to spell, he says that a written test, without access to a computer spellchecker, revealed further problems with spelling.
William Dutton, director of the Oxford Internet Institute at Oxford University, says that in some informal parts of the internet, such as Facebook, there is greater tolerance towards spelling and grammar.