The problem was that they wouldn’t go round much. It was the wrong kind of wind (intermittent). Even after another £6,431 was spent to encourage them, they seldom did their turn. They’re being sawn down now,...

Wonder how much more cutting them down cause they freakin don't work is costing.

http://www.telegraph.co.uk/comment/telegraph-view/9272369/Hardly-revolutionary.html