It's possible someone see and read my post when I post in topic that have many page? For example i reply in page 100 in a topic. Will they read my reply.
Well, I think it depends if that people read on its post reply and they looking for your reply. But if that post is got 100 reply its possible to read your reply by manualing check your username. That's so hard to do.
Some users of bitcoin , or posted or reply on forums read first in the comments to get an idea for that topic , and what they reply on that topic . They think based on the comments they read. So that they can get more and wide ideas.