Wrong section. moving to Suggestions & feedback.
1.- Correct, users will recive email notification of new posts in threads that they decide to subscribe, or from threads they created (if the propper option is checked when the thread is created).
#2: No, you can oly reply to a thread within the FedoraForums pages.
"Since when has the world of computer software design been about what people want? This is a simple question of evolution. The day is quickly coming when every knee will bow down to a silicon fist, and you will all beg your binary gods for mercy. "