If you were able to post this discussion, you should be able to find the other two. The other two are posted right next to "Post a discussion".
Unless you found this on a product page, then you need to do this:
1. Go to the home page
2. On the right hand side of the home page, click "Community Corner".
3. Click on the tab at the top that says "Forums".
4. Scroll down and find a topic that you want to post in. (*example: "Sex Toy Information". Then find a "sub topic" that you would like to post in such as " Vibrators".)
5. Scroll to the bottom and you will find four buttons.
-Post a discussion
-Post a Poll
-Post a Comparative Discussion
-And some other one that I never use, so I can't recall what it is LOL.
HOpefully this is a better response and more helpful than "figure it out" lol.