Seer-of-Blood

Ah, I see. পোষ্ট হয়েছে বছরখানেক আগে

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. পোষ্ট হয়েছে বছরখানেক আগে

I think it's because some people don't check their নবীকৃত তথ্য to see who commented, so they check their দেওয়াল instead to see if the person replied back. পোষ্ট হয়েছে বছরখানেক আগে