It will basically go through all the links it finds, that can be millions of links. You can also tell it to ignore certain links using regular expressions or via tales java apis.
https://github.com/calufa/tales-templates/blob/master/core/s...
This is the api call to start the scraper on twitter:
http://localhost:8080/start?process=tales.scrapers.LoopScrap... -template tales.templates.FirstDepthTemplate -threads 2 -namespace com_twitter -baseURL twitter.com