Posting and Commenting
One more thing: Remember there's a difference between a 'posting' and a 'comment'. The comments are your responses to someone else's post. They will not be displayed as the main text and are visible only when you click on the "comments" line that tags the postings.
The postings are of course where you should each be posting your questions. Keeping the postings separate (i.e., instead of 4 people posting to the same place) allow others to respond and comment specifically on your questions -- thus creating multiple dialogues that are connected to the original posting.
Hope this helps.