The most powerful tool that agents and Buyers have are the local RMLS and the search tools that are proven to have the most hits. Example; http://www.realtor.com,
RMLS both Portland and Willamette Valley Multiple listing services with the most pictures as possible for the given property are the most incredible tools for selling property. These two sites alone have the greatest audience. To have your agent be a member of more than one RMLS is huge and would be very important to draw the most attention. There are many other sites that are proven to be very powerful world wide such as Lands of America which draw buyers from all over the world verses small little websites that bring little or no traffic.
Good news for you may be that if your home is near Wilsonville which is the "Lake Oswego" of our area then all a buyer has to do is put the street name of Wilsonville and will most likely find your property.
Our experience has shown that virtual tours increase traffic tremendously and that price changes create increased activity each time a price change has been made.
Have a great day!