I just found this thread and followed up by testing my first link on reddit. I'm wondering, though, if our links are shared among all reddit users or mainly only in our own subreddit (the hubbub). If it can be seen by other reddit users, then I agree that hubs related to general topics may do better. But if only seen by other Hubbers, then maybe it's best to submit links to hubs about subjects that are related to success with writing online.