It sounds much more complicated than it is, but basically, what I want with this is an improvement that will make possible the creation of "Share on Steemit" (or "Steem It") buttons, in a Facebook/Twitter style.
I submitted an issue on Github, here's the content for the lazy ones:
In submit.html the form using ReplyEditor could be auto-populated with $title and $body if accessed like this:
https://steemit.com/submit.html?title=encoded_title&body=encoded_body
This will allow the creation and dissemination of FacebookTwitter-like share buttons which will make posting easier, by decorating the URL of the button with a scheme like above.
I think this is only a client / UI feature and it doesn't impact anti-spamming filters (throttling posting every 20 secs, etc) but a second opinion would be welcome.
If necessary, I can contribute buttons for creating a Steemit official "share on Steemit" or "Steem it" share button.
If you support this enhancement, please show it by voting on this issue on Github.
I'm a serial entrepreneur, blogger and ultrarunner. You can find me mainly on my blog at Dragos Roua where I write about productivity, business, relationships and running. Here on Steemit you may stay updated by following me 
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