I think that if you genuinely have something to say in response to someone's post and it has only been a day or two since the post (and you didn't notice it or something) then it's fine.
It's also fine if there's a significant development.
Desperate.. there are 278267372 members on ATRL. If we wanted to post in your thread. We Would.
No one on this site are stars.. so having a "hit thread" boost their self esteem. smh.