The forums don't have post counts showing because they encourage spam. People post a lot of low-quality posts just to get their post count up.
If you really want to see how many posts you've made, just go onto your Profile and click on 'Find all posts by Harle-Quin' and the amount of posts you've made will be in the top right corner.
Edit: FM beat me to it. Stupid breaking EoFF.
