I am wondering how the favourite button is supposed to work, and if there are more features that are planned to be added to it?
As far as I can tell, currently there is no way to actually view the posts you have marked as favourite. That makes me wonder, what user story is this feature actually trying to address?
If the objective is to show how popular and liked a post is, then the vote up is doing that job. If the purpose is to mark the thread or post for follow up, then watch is doing that.
Can you explain a bit about the design decisions behind the favourite feature, and if there are plans to improve it?