We hadn't explored existing options in the market until a Beta tester sent us a price list (pictured) for a system that does part of what we've described. The exception is that they charge $374 for just 30 posts to individual accounts. The feature in Yabber, however, is one of countless marketing modules and doesn't cost a cent extra to our marketing clients. Additionally, our property social module applies no limit to the number of posts or the number of destination accounts media is sent.
We expect a general Yabber release next month after we've processed a few different feed types (for automation).