Webpages often have lists of things, whether they be products, service, companies, sponsors, or whatever. If you want to open each thing url on a separate tab, then this video is for you.
For example, you're an investor looking at 600 startups on a startup accelerator website. Would you rather
1. open each startup's link one by one
OR
2. have all 600 startup tabs open and then close tabs one by one
I would much prefer the latter: more efficient.