Use this Plugin to run Junxter Classifieds on your blog. Your blog will be able to display and accept classified ad postings, allowing you to sell classified ad space to your blog readers. Users can find and post classified ads right from your blog.

Demo page of Junxter Classifieds for b2evolution here:
http://demo.junxter.com/b2evolution/1.9/index.php?blog=2&disp=Classifieds
Plugin description here:
http://demo.junxter.com/b2evolution/1.9/index.php
Download plugin here:
http://demo.junxter.com/JunxterAds_b2.zip
More information about Junxter Classifieds here:
http://www.junxter.com