Factiva reCAPTCHA - Why am I being asked to enter a reCAPTCHA image when downloading records?

Factiva employs reCAPTCHA tool to prevent excessive downloading. By license, academic Factiva users will be able to download the first 100 articles without having to validate. After the first 100 headlines, users will then be prompted by the reCAPTCHA utility to validate every time that they extract 6 or more articles at a time. The reCAPTCHA control will only be displayed when the user is trying to download or view articles. The control is not shown if the user selects headline view.

User-added image