Seer-of-Blood

Ah, I see. 发布 一年多以前

Yes, that's probably it. Some people also chat with multiple people at the same time, which may cause them to lose track of their comments. 发布 一年多以前

I think it's because some people don't check their 更新 to see who commented, so they check their 墙 instead to see if the person replied back. 发布 一年多以前