> There should be a service that you can pay to have it periodically crawl your website and generate a zip file...
So, essentially, a paid version of archive.org, which would be a _great_ startup idea - something that I've been mulling over for quite some time.
The technical (and infrastructural/logistical) challenges in implementing/executing something like this, however, would be rather steep, imo. In most cases, a simple crawl just won't cut it, as most sites today would have been built using some sort of CMS, with a database backend, so a simple crawl and archive of the public-facing site would leave you with a (horribly) broken version of the site.
As a freelancer, I routinely come across inquiries/gigs where people changed hosts, took a backup of the webroot (and not the database), discontinued the old host and ended up with a DOA site!!
Coming back to the matter of an archiving/backup service, this could be doable notwithstanding the challenges I mentioned above. Something I would _love_ to have a go at, but beyond the means of an ordinary web tech wahm from India. (Any takers? :-))