Totally agreed they are addictive.
Feral Heart is... Well, can't describe, you guys know the feeling. It's so cool to have that many friends here, to share your love towards FH with. And forums are really aditctive, and, like Flob said, you have the feeling that you must leave your mark on each thread :D For me the forum is the only place I can talk about FH, my friends don't play it and haven't ever heard of it, I'm not sure if any others in my country are addicted to FH that much like me or if they even play it.
Like most everyone here has stated, lurking around the forums can become a bit addicting. There are times when once I begin browsing through the new topics I have yet to view, I do not stop until there's nothing else for me to overlook. Which can take hours sometimes. I also, on occasions, use my Kindle Fire in order to fool my teachers during school. They think I'll be reading a book when I'll steadily be browsing through the forums. It's a risky process, so I don't do it too often. Still, I'm sure it clarifies that this community grew on me both in-game and forum wise.