Subscribe to Answers
Just keep blogging.
Keep interacting and stay top of mind.
Just checked out the referral exchange. Considering the amount of people moving to the Seattle area, it is pretty quiet in there.
Posting and commenting.
Annette nailed this one!
If you regularly comment on posts and get to know members if they have a referral they may think of you.
The best way to receive referrals is to GIVE referrals.
For instance, my area of Florida is highly popular with folks moving here from NY, PA, OH, IL and Ontario. Identify the AR members who are in your target sources and FOLLOW them. Most will recipricate. Now, all you need to do is help them and they will help you.
Oh, you can not be invisible. Post meaningful blogs and answers so they can have a reason to talk about YOU.