Regarding the "like" button - In certain forums, it doesn't work. In this case, I think it does. You need to have a way for members to show their appreciation or to agree with a post.
Please don't enable any down icons or downvoting. That creates a negative environment and encourages contention which lowers the quality of the site. It's also more work for the moderators.
Page Footer
We really, really need to have a page footer containing links to a privacy policy, terms & conditions, and the (forthcoming) community guidelines. A link to "About us" would also be helpful. The website looks incomplete / broken without a footer.
It's important. Not only because readers need to find the information (and they expect to find this!), but that the European privacy laws require websites to have a privacy policy. It's easy enough to find one via Google.
You'll need dedicated pages for the above links, which I believe requires an extension.