What happens when I download all the leads you give me? Why would i keep my subs...

What happens when I download all the leads you give me? Why would i keep my subscription? Of course you might find new leads that fit my query, but that initial list is good enough for last for awhile to reach out to…

Also, does the scraping of the Linkedin profiles happen on my machine or your servers? If on mine, do I need a LI account? Do i need to be logged in?