For many years back in the 1960s I was an ISWL member. Years later I rejoined for a few years but left way before my stroke. I was saddened that no-one contacted me to persuade me to stay. Although a friendly bunch, it was no longer for me.
At one time the ISWL had members from all over the world but when I left it was a shadow of its old self with not many members. I contributed to their magazine Monitor most months, but it had passed its "sell-by date". I am not sure how many members it now has but I'd be surprised if the number was much over 150.
See http://www.iswl.org.uk/ .
This is a warning to us all. As radio amateurs (on average) get older we can expect several magazines to go. 20 years from now we might lose pages (or worse) in SPRAT, QST, and RadCom amongst others. Some well known advertisers/dealers may go out of business, there will be less revenue from adverts and a dwindling market for new products. I have said this before, but I fear for the future of our hobby unless we can attract and keep a younger generation.