Lee,
No, not right now. Posting of images and other 'rich' content is something we're looking into and hoping to have available later this year. Until then, only text updates are auto-posted back to the user's Facebook wall.
There are of course tons of other great features for Facebook integration with JomSocial, including automatic account creation (no forms), Facebook Requests/Invitiations, and that's all on top of the Joomla integration we have.. all the social buttons, Open Graph tags, Page Tab integration, etc. We understand though if this is the killer feature you're looking for. Hopefully we'll fill that void over the next few months!
Hope that helps explain,
Alex
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