When I joined, it was a little awkward, I admit, and I wasn't that active. But once I got myself more into conversations, got to know the fellow Merrickans better, I felt more like I belong. But I think this is something common to most new members, in all dorms. I think new dormies feel it's a little hard to fit in at first, which is why you have to keep coming in and know you're welcome. Don't run away and stop posting! Just join conversations and activities, and I promise you'll fit in a love your dorm!
When I entered the position of Merrick's prefect, I knew I wanted to make new and old Merrickans feel welcome (they always are!), and enjoy their time at the dorm, and love their dorm. I hate it when new members feel left out, I feel personally bad.
Back on the topic, I try to post as much as I can, even if I don't post in the general board, I try spending time, even one post, in Merrick. It's really fun having that thing and I'm happy to be in Merrick, this is the best house IMO.