How do you judge whether an exhibition is successful?
Well, one criteria is to look at the Visitors Book. How many people have signed it?
In less than a week over 100 people have written in the one for the Children of Craig-y-nos exhibition in Swansea museum.
This is yet more evidence, if it was still needed, that the project has touched the heart of the community, for it has opened up a subject, once taboo, dealing with nearly 40 years of lost Welsh history, how children were locked away.