hckrnews is awesome. Before i found hckrnews i had no idea at what point to stop scrolling for more news if i missed looking hacker news a day later. The problem was since the feed is not linear with time and the newer articles can go beyond the articles you have already visited, there was no right way at what point to stop. hckrnews has addressed this issue very cleverly with the 20% , 50 % vote. Amazing.