Each URL of a post has a series of numbers after the equal sign,like this one below:
https://bitcointalk.org/index.php?topic=2881736.0I know these numbers might be time-related, but I don't know the details, they don't seem to be timestaps or maybe they are just the IDs in the database?
And I found that:
1) if you simply find a topic number and plus one each time, you won't always go to a latter post, sometimes end up with error (maybe nobody post at that moment?)
2) number after the dot sign decides the replies that show to you (if the number is 20, then you will get the first 20 replies. if 40, you will get 20th to 40th)