National research shows that the top means by which buyers found the house that they eventually bought were:

• hearing about the property via their Realtor
• viewing the property online 
• seeing the yard sign (driving through neighborhoods)

How should this dictate marketing strategies as a seller or seller's Realtor?

Realtor

• Enter all pertinent details about the property into the MLS.
• Make it easy to show your property, and communicate that flexibility via the MLS.
• Enter descriptive, compelling remaks into the MLS.
• Take top-notch photos and enter them into the MLS.
• Remind other Realtors about listings when you see them.
  

Online

• Focus on the few short sentences permitted in the "Remarks" field in the MLS.  Make this attractive and compelling, and update it periodically.
• Take compelling photos that bring to light the best features of the home.

Sign

• Keep the sign looking professional --- pound it into the ground if it starts to sag.
• Install a flyer box with a detailed flyer inside including price and other amenities.
• Include photos (and floor plans if possible) on the flyer.

Remember --- this is just the start of property marketing --- but it is likely to be very effective, as it has been developed based on current buyer behavior.