I see this all the time on emerging startup apps and websites. Very annoying. It beeps and pops up and covers the bottom right side of the screen and sometimes

I see this all the time on emerging startup apps and websites. Very annoying. It beeps and pops up and covers the bottom right side of the screen and sometimes covers up content. Worst still, it pops up 10 seconds after I arrived at their site when I haven't even begun to really dig into the information, so of course I don't have questions!