You may have heard that the underbelly of the Japanese Web revolves around a massive bulletin-board service called 2-channel (pronounced ni-channel), where people can post messages anonymously. For Japanese, who find it difficult to freely express their opinions in public, that anonymity has meant that 2-channel has become a place of emancipation. As such, the site is mostly full of garbage and is often the epicenter of Internet "incidents." It has, though, also become an outlet for a lot of valuable information.
However, to sort though the huge number of posts on 2-channel can take time, and these days many people are not actually reading directly from 2-channel. Instead they read 2-channel matome (summary) sites and blogs that summarize lengthy discussions into short and concise reads.
Once the matome bloggers find an interesting discussion thread, they summarize what can sometimes be thousands of comments by cutting off all extraneous or "noise" comments. They also reorder comments, change the fonts and color of the text so readers can grab the gist of the discussion more easily.