Design flaws in websites of 25 of the top 30 FTSE companies make them difficult for search engines to find, a new report claims, with Diageo faring worst.

Fundamental flaws such as failure to source appropriate keywords on webpages mean that the sites are not at the top of search index listings, losing hits for the companies concerned.

The research, carried out by search engine company Seekport, found that nearly half of the corporate websites for the top 30 FTSE companies were inaccurately described in their code, adding another difficulty for search engines.

The report is also critical of the increased use of Flash in corporate sites because these pages do not use HTML code, making it difficult for search engines to find and index them.

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