When I read a post, if I want to reply, I can only see how to reply to the bottom of the thread and not to the particular post. Am I missing something?
no you can only add to the bottom, if you want to reply to a particular post the precede it with the name and time or you can cut part of it and past it into your own post and use it as a quote.
eg if I wanted to reply to bobbisox i could write:
bobbisox 20:46 I think he means reply to an individual answer in the list of posts
or
bobbisox "Go to answer now RSD" - I think he means reply to an individual answer in the list of posts.