Simple enough. PadMapper extracts Craiglists/etc listings, allows you to filter down by parameters (e.g. minimum bedrooms, bathrooms, wood floors, granite countertops, etc), and places them on a map, so you can easily visualize location as well.

Great way for me to make sure my next place is sufficiently close to the Charles River Bike Trail. Now if they’d only overlay it with a map of the MBTA…