Forums and SEO benefit

Are forums a good investment for a website?

Obviously they act as a good way to boost awareness of your site provided that they are well kept. But what are the SEO benefits? If a forum is hosted on a sub domain will that benefit the main domain as well?

Seems like it could be an additional source of page views which equal revenue.

I used to use forumotion but it wasn't very progressive.

If anyone has experience with forums I would love a 2017 update for good forum hosting platforms to…

Forums and SEO benefit