I also got a response from a Casio rep:
From: "Brian Arney"
Subject: UK musical instrument forum
Dear Mr. Minhinnick,
I understand that the site is being upgraded and should be up again by the end of the month.
Regards
Brian Arney
General Manager
Operational Services Div.
Casio Electronics Co. Ltd.
Unit 6, 1000, North Circular Rd.
London NW2 7JD
Tel: 020 8452 7253
Fax: 020 8450 9139  
www.casioextra.co.uk  Here is my reply:
To: "Brian Arney"
Subject: Re: UK musical instrument forum
Brian
Thank you for your reply.  I would like you to know that the forums were very popular with Casio keyboard users from around the world. 
One issue that many forum users were agreed on, was that they would welcome input from one or more Casio representatives, particularly as contact with customer support quite often goes unanswered.  This has a negative effect on the perception of Casio support in the marketplace, but could quite easily be turned around by support of an active user forum.
It would be a simple business to allocate someone at Casio to keep an eye on the forums, and provide contributions or  feedback as appropriate.  This would be most appreciated by all forum users.
Regards
Stephen Minhinnick.
The next day Brian Arney replied as follows:
Stephen,
Thank you, I will pass this on to our sales people. 
Regards 
Brian Arney 
General Manager 
Operational Services Div. 
Casio Electronics Co. Ltd. 
Unit 6, 1000, North Circular Rd. 
London NW2 7JD 
Tel: 020 8452 7253 
Fax: 020 8450 9139   
www.casioextra.co.uk   [This message has been edited by sminhinnick (edited 10-14-2004).]