Formal:
* The forum will be a place for discussion and debate on the upcoming legislation.
* She presented her research findings at the international forum.
* The online forum provides a platform for users to share their experiences and advice.
Informal:
* I'm going to post my question on the forum and see if anyone has any answers.
* The forum is full of passionate gamers who love to talk about the latest releases.
* I joined a forum to connect with other people who have the same hobby as me.
Figurative:
* The internet has created a global forum for sharing ideas and information.
* The upcoming election will be a forum for the candidates to present their visions for the future.