I think you're right sherrardk, I thought anyone could add to Wiki in fact they invite you to do so. That's why wiki is not generally accepted as a reliable source when absolute facts are needed eg essays etc.
I think Wiki have clamped down a bit. Have to be registered or something now. Due to vandalism of posts, I think.
Funny how people treat Wiki as an encyclpedia, tho ... It's really pages of "opinions"
A good Wiki article will have links to official and reputable sources at the foot of the page, and quotes with sources, which makes Wiki a great starting point.
I agree I use wiki all the time and most of it is great and I assume it to be factual but I do know it's not accepted in academic circles as a valid reference source.
Hiya x
Been hard at work changing a triple casement 24 pane window we made to spec under that oak lintel (remember?)
Found a lucky penny under floorboards there the other day ... George III'rd .. 1806. Must have been dropped by the carpenter laying the wide floor boards. I will carry the penny now forever : )