Hi , my another idea it's , Ultimate Autoposting plugin for osclass, for Facebook, Twitter , and others social networks. This plugin will be automaticly post ads in social networks than user will be post his ads in website. I think it's will be very usefull to promote osclass ads websites.

In time when it takes more than year for facebook to approve proper access to be able to auto-post to facebook, there would be just complains that plugin does not work and never ending questions how to get access etc...

Old topic but I just found an old osclass plugin ( not working now but.. it was working once ). But in this "way".... I am giving a suggestion for collaborating with blog2Social or something like that ( I am using this on WP and works perfectly). Plugin for OC working with blog2social or some else platform = problem solved

You can use btndigitalmedia.com
Add  feed url to RSS and it's will auto post to all of your social media.
I use this website for my share automatic,
It's share title description and 1 images from osclass feed
I think it's better if osclass have more then 1 image in feed so it can share multi images

You coukd use Rest API to create json or xml with listings