The periodicity of the link check is dependent to your account plan, it variate from a best effort checking in free accounts to precise and frequent check for payed plans.
Can I use URL Freezer links on social medias?
No, URL Freezer links are designed to work only if accessed from your websites
How can I be sure no one else is using my links on their websites?
A URL Freezer link if accessed coming from a website that is not listed on your own account will produce a page not found error
Can I use a URL Freezer link in multiple websites ?
Yes payed plan allow to list multiple websites as link sources
How does long it takes from when a link goes offline and URL Freezer enable the snapshot
The time from a content being changed and the snapshot being activated depends on the plan, Premium plans offer the shortest time