Back when Lenovo ran their outlet for refurbished laptops on very database heavy oracle backend (2011?), our little computer shop would buy stuff from them. If you added an item to your cart, it would hold it for 10 min and prevent others from purchasing.

I used AHK to script a process that would automatically add laptops to our cart based on certain search criteria. Then we could sift through their inventory and release what we didn't want.

It was running great until one day it went rouge (okay, was prob human error) and it added EVERY item to our cart and crashed their website. Database error came up, I called them and told them what I did and they were happy to know why it went down.