Seer-of-Blood

Ah, I see. đã đăng hơn một năm qua

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. đã đăng hơn một năm qua

I think it's because some people don't check their những thông tin cập nhập to see who commented, so they check their tường instead to see if the person replied back. đã đăng hơn một năm qua