I was amazed Marg at how much I had accummulated in less than 6 months. I now have to follow up on all the leads. I've been like a child let loose in a lolly shop.
The following was what I was quoting in order to answer Babs. My interpretation is that there are no plans to delete anything but the options are kept open.

"Site Help 29/8/2010

Deletion of threads on the Research Board.

From - Muggins in Sussex

Are there any plans to delete some of the older threads on the Research Board ?
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Not at the moment, Muggins, we'll let you know if that changes.

Gwynne"