Hi Wayne, in answer to your questions:
- There is no specific option to limit/allow images based on ad price, but yes you can allow free ad listing with charges only for featured ads if you wish.
- You can create
custom ad forms which are specific to categories, so yes this can essentially be done.
- In what way specifically do you want to use affiliates? You can essentially add whatever information you want in an ad description, but I'm not sure that's what you are meaning so please feel free to clarify so I can better answer this..
- There are plugins which can be used for the purpose of auto-feeds for Twitter or Facebook such as
Twitterfeed. AppThemes does not officially support third party plugins, so we cannot guarantee all plugins will be compatible, however I believe some customers have mentioned having success with that particular plugin.
Thanks :)