I hope I'm not blind, but as far as I see, there are no links from any game directly to their appropriate forums and links back?
Wouldn't it be nice if that was possible, instead of having to go to the community start page and search for the forum?

You're only partially blind. If you go into "My account", click on any game in your collection, then go to the Game Information tab, there is a direct link to that game's forum. Also, any game you own should have its forum automatically added to your forum "favorites" list, which means its forum is automatically grouped at the top of the forum list.

For the most part, though, you are correct: if you view a game's entry in the catalog(ue), there is no direct route from there to that game's forum. It'd be one of those "nice to haves."

Yeah, I've thought this for awhile myself.
Hopefully it'll come int he site update next month. :)
For now you can request it on the features thread.

WHAT

You're behind. ;)
Mentioned in multiple interviews.

When? Where?

I agree, there should be a link to the forum of a game from the gamecard page.

Too lazy/busy to link. Check the news archive.

Not all people are lazy :P
Pulled from a random interview here:
http://www.gamezebo.com/features/interviews/gogs-marcin-iwinski-activision-deal-why-drm-still-sucks
"We also have a lot of plans in terms of updating the site, its functionality and implementing quite a few new features - this is also planned for end of March, so do keep checking us out. "