Thank you for your reply, Marco. I'll think about the ways to guarantee the logevity of the service.

Thanks, Marc! This is super helpful. Very good point regarding the tendency to keep projects without attention instead of shutting them down.

Regarding the periodic screenshot-ting idea — what is the main purpose of having those screenshots? Is that mostly for sentimental reasons or to use them for some other reason?

I think with a subscription fee it would be possible to make that project profitable and sustainable. Such service can also provide a way to download the archive of all assets at any time. At least that will guarantee that no snapshots/screenshots are lost. Periodic screenshots can also be automatically emailed to the site owner.