I've contributed in both content and community throughout my time here, many times, doing both at once, because content adds to community, while community encourages more to post solid content.
Since the forum has been established, I've contributed quite a bit to Travel Health and Fitness, sharing tips, but also lending support to those in the community who frequent that forum.
I'll usually chime in on discussions in other forums when I have suggestions or knowledge to share, or experiences that might help others