In answer to your questions:
1. Not specifically outside of the advanced search functionality which appears in the category view sidebar as seen on the
ClassiPress demo site, there you can search by location based fields.
2. Users can use the sidebar contact form to communicate directly with the ad poster
3. Customizations are not officially supported, nor do we offer these services, however we do have a
certified partners page where you can find developers for hire who are experienced at working with our themes. Thanks.