In reply to Hooo:
I guess perhaps you're right. It wasn't so much that I didn't want to sell to someone with poor English, it was just the number of similar responses, all with bad English and no mention of the item itself that made me suspicious. They looked very much like the kind of thing that arrives in my 'spam' mailbox every day. Just to clarify, it wasn't generally text speak or pedantic grammatical errors, it was just bizarre typos in virtually every word and sentences which didn't hang together.
The charity shop is a good idea, next time I'll just do that. I'm not bothered about getting money for it but it seemed better to ask a small amount as I've had experience in the past with freecycle of people just roaming in vans picking up anything they can get free to sell on and I'd rather it went to someone planning to use it.
I seem to have found someone genuine now, impossible to tell of course, but they asked about the dimensions etc. which suggests they ay least know what it is they're buying! They also agree to the asking price so for those of you hardline free-marketeers saying I can't choose who I sell to you can rest assured that I've only discriminated on wealth so everything is hunky-dory.
As for Andy Morley's criticism of my username, even with your Victor Meldrew filter on I'm not sure how you decide my username displays poor English - perhaps there is a traditional name "Woojmick" which you think I have misspelt? If you really want to know, I typed it by accident when hitting the keyboard, which appears to be the same way many of the replies on Gumtree are composed.