Is r/beermoney tapped out for Superpoints referrals?

Reddit.com's /r/beermoney has provided me with more Superpoints referrals than any other source and was also  what introduced me to Superpoints. That said, over the coarse of a few months, I've seen Superpoints come into and fall out of the site's favor. People often complain that the subreddit cannot provide referrals because everyone on there is already on Superpoints. While most frequent readers are most likely already sign up for Superpoints, I suspected people with this complaint may be overlooking the subreddit's growth.

Over 25 days, I've periodically recorded the number of subscribed readers. Below are my notes on the dates and number of subscribed readers:

03/01/12	5937
03/02/12	5991
03/04/12	6002
03/05/12	6007
03/06/12	6023
03/07/12	6050
03/08/12	6050
03/09/12	6048
03/12/12	6060
03/14/12	6078
03/19/12	6170
03/20/12	6198
03/25/12	6317

That's an increase of 380 subscribed readers in 25 days. Sometimes throughout the day, I would notice the number drop slightly, so unless all those people re-subscribed later, I suspect the number of new, subscribed readers is closer to 400.  This combined with the readers that do not actually subscribe to the subreddit lead me to believe the number of potential Superpoints referrals coming to r/beermoney is still a great place to get referrals if approached intelligently.  

Do you have other suggestions for great places where readers are likely to be interested in Superpoints or any other GPT sites? If so, leave a comment and let us know.

Update: As of May 6th, /r/beermoney is up to 7,035 members. That means that in a little over a month, it grew by over 700 subscribed readers!