Hype about Web 2.0 is making web firms neglect the basics of good design, web usability guru Jakob Nielsen has said.
He warned that the rush to make webpages more dynamic often meant users were badly served.
He said sites peppered with personalisation tools were in danger of resembling the "glossy but useless" sites at the height of the dotcom boom.
Research into website use shows that sites were better off getting the basics right, said Mr Nielsen.
View: BBC News