Awesome initiative and thanks for mentioning me!
I have set up an automation on https://ifttt.com/ that automatically shares links to my Steemit posts on Twitter, Facebook, Pinterest and Tumblr. I wish steemit.com itself had an RSS-Feed for profile pages, ideally including the text and a featured image.

It shouldn't be to hard to write a script that make an RSS Feed out of a Steem profile, but I currently don't know of any service, this is why I have to go through a third party service that generates an RSS-Feed from the HTML page, but only once in 24 hours, so the posts are shared with a delay and it also includes resteems. If Steemit had an easy way of automatically sharing Steem posts to other social networks, this would mean a lot of publicity for Steem and Steemit.