Most stories are not spam, they are just posted at wrong time. To give you an example, this story itself was posted on last Friday evening PST (https://news.yc

Most stories are not spam, they are just posted at wrong time. To give you an example, this story itself was posted on last Friday evening PST (https://news.ycombinator.com/item?id=7825146 https://news.ycombinator.com/item?id=7825146). It got just one upvote and 0 comments. Exact same story with exact same page content on exact same domain was posted on Monday (today) afternoon PST and it got 80+ upvotes, 30+ comments and got on frontpage for more than 6 hours! A lot of stories are like this. HN ranking algorithm isn't perfect.