Here you go: https://support.mozilla.org/en-US/questions/969503

Thanks Feer. This may sound ridiculous, but how would I find it without your kind link?

You can go to a forum index page and make sure that you are logged on (if necessary click Sign In).

• https://support.mozilla.org/questions

If you are logged on then on the top of the [/questions] page you have a Sort and Filter item that opens a drop down list.
You find "My Contributions" amongst the choices in the second column (Show).

• https://support.mozilla.org/questions?filter=my-contributions

Thanks cor-el  :) Most people prefer nice and direct answers :)

Note that this has changed recently as you now see a Filter and a Show item.

Go to a forum index page and make sure that you are logged on (if necessary click Sign In).

• https://support.mozilla.org/questions

If you are logged on then on the top of the [/questions] page you have the Filter and the Show item. You can click Filter: "All" and Show: "My Contributions"

If you are logged on the this forum and see your name instead of "Sign In" in the menu bar on top of forum pages then click your name to open the drop down menu and select "View Profile" to get links to your contributions (questions and answers).