Emory,
This would be a good question for the Seattle Investors Club at the next meeting. If you are looking to contact expired listings, as a broker, you can try to list it for them, etc. Also depends on the house and why it didn't sell. Asking price too high and in nice condition, it is not a wholesale or rehab type property. If it didn't sell because of condition of home, which could cause it to not get traditional financing, it could be a good property to get under contract and wholesale to a rehabber, if the numbers are right.
If the price is right and condition is right, it could be a lead for buy and hold, but in this market here, buy and hold is not that easy to find (in Seattle at least).
From my little experience with expired listings, you need to get their price down from what they are asking. One good way to do this is to start with their price, back out commissions, repair costs, concessions, etc., then give is an additional discount for a cash offer. When you explain your offer (discounted) using the reasoning above, you can potentially find leads to wholesale to rehabbers.