Of course you can quote or make a reply on any subject here in our forum. Just remember not to spam, but to add value on the discussion and not just post one liner. As you can see, there are lot of thread here and I'm sure you can contribute to whole discussion and share you ideas, comments or suggestion. That's why is it called a discussion, exchanging one ideas about a certain topic. But there is a limit for newbies, If I'm not mistaken, its like 6 minutes before you can make another comment. Goodluck on your journey to bitcoin world.