title: Which is better way between develop new system and modify open source Ad Classified?
body: <p>I take few days to look around internet to find out best open source Ad Classified. I would build it with PHP.</p>
  
  <p>I found few Ad Classified which is good such as OSClass, and Open Classified. But I may need to modified to what I needed.</p>
  
  <p>I am stuck in idea to choose which is the best way to go. Should I build a new system or should I take and modified.</p>
  
  <p>Any help would be much appreciated!</p>