Every company has its own associated forum. You can find this under the ‘forum’ tab within Company Reports.
Forums are used for general discussion on a company. This is in contrast to ‘Straws’ which are intended as specific insights on a company and are used to support (or refute) the investment case.
There are also general forums which are for discussions that are unrelated to a specific company. For example, to discuss the broader market or to post general thoughts on investing. You can access these from the menu at the top of every page.