Research into some of the world's biggest companies has revealed that they are still struggling to be effective at natural search engine optimisation (SEO).

A study of top US brands showed that natural SEO - sometimes called organic search engine optimisation - is still in the early stages of development among the Fortune 500 group of public companies.

Search engine optimisation (SEO) issues are still unclear over websites that link to news stories or copy headlines from online content after a legal case about the matter failed to go to trial.

A publisher planning to sue the New York Times (NYT) over copyright infringement reached a settlement just before an intellectual property court case to examine the matter was due to start.