The button is the closest feature this site has to a live feed, which is very useful in game threads, to see posts go up as they are posted with the content largely included -- rather than constantly having to refresh the browser. It's also nice that you can see who and what threads are being posted to at any moment -- if there is a hot topic going on in real time. I said please and asked a genuine question. I'm sure that many people do use this, but won't think to look here in an obscure forum to contribute their voices of support.