A long time ago I built an app to monitor online retailers for items that were hard to find in-stock. It would send me text alerts so I could buy them before t

A long time ago I built an app to monitor online retailers for items that were hard to find in-stock. It would send me text alerts so I could buy them before they went out of stock again. I made it into a business for a while, then the retailers caught on and stopped paying commissions on a those items. I’ve also built code generators for myself.