Simply, it means, that when you give 4tsp a URL to a recipe on the web, Provenance will
take a snapshop of the page, save it and record when it was saved. Similar to how a
work of art has a provenance.
This gives you, the cutomer and cook/baker/drink-maker a way to keep the actual recipe
and not just a link to a recipe that may disappear one day.
A backup of a recipe from the web is worth a lot more than just a link, easier to use then
print outs and more flexible then using a propriertary food site's "recipe box".