One reason is trying to follow a HN discussion. I do not see a better way to do this than keeping several tabs open with topics I would like to recheck a few ho

One reason is trying to follow a HN discussion. I do not see a better way to do this than keeping several tabs open with topics I would like to recheck a few hours later. There could be other ways doing this and I have some ideas, but right now multiple tabs seem to be most practical solution for this.