I know some people are strongly pro or anti Dysons, thought this might
interest:

Owain

A man is suing cleaning giant Dyson for damages after his new vacuum cleaner
sent him flying down the stairs.

At Aberdeen Sheriff Court, he said the hose extension knocked him down his
stairs as he tried to clean cobwebs.

Dyson admitted liability for the accident and the court must now decide the
amount of damages to be paid.

A Dyson spokesman: ".. Dyson would not recommend that anyone use their
vacuum cleaner while standing on a chair at of the stairs."

http://news.bbc.co.uk/2/hi/uk_news/scotland/3840375.stm