People miss visa slots, job posts, and price drops because website change monitors need CSS selectors most users cannot write

Someone missed a government visa appointment slot because a page changed and they did not notice for two weeks, a story that drew a 320-point thread. The demand spans job seekers, resellers, real estate watchers, and procurement, but the existing tools are power-user products that need CSS selectors to be precise, so non-technical users bail. The gap is a profession-preconfigured, zero-setup change watcher.