Trudy - If you hold your mouse over the name of the forum topic, it will show the number of the forum in the bar at the bottom of your page (where the page loading status bar is).

Catwoman - the ranking Trudy mentioned shows at the bottom of the control panel screen. It says - Your total score on the site: 110
Your contribution ranking among Turkish Language Class members: 9

Great question Trudy, I've wondered that myself!