merlin,
I’ve been to Shuttleworth a few times though not yet to volunteer. I help out when I can at another museum, but I do find Shuttleworth to be a fantastic place. That being said, it is like comparing apples and oranges. Some would be more interested in 558 while others would prefer Shuttleworth. My point is that it is not harming anyone for them to put that promotion out there to raise some funds. If people don’t wish to partake then nobody is making them.