They are usually meant for access a certain number of times. After the limit is
over, the link will expire and not be available for anyone. In any case, the links
are used by multiple users frequently. So, the link will not be available at a certain
point after posting.
Even if our site says that there are zero clicks on the link. But it doesn’t mean
that the link is not clicked from different sources. So, it is advisable to look
for all the newest links with a low number of clicks. This will enable a high chance
of getting the reward rather than an expired link.