Being able to Embed a web page into a steemit post would solve your problem, and add a cool feature to steemit. You could post your article on your website, then embed it in a post here with some commentary. This would let you keep control of the master document, and also solve the problem of linking vs copying because it would be easier to simply embed the page in your steemit post.
It comes down to asking the steemit developers to add something like this oEmbed plugin https://premium.wpmudev.org/blog/embedding-wordpress-oembed/
If I'm understanding this correctly though, the integrity of the data availability is subject to the source, no? So, if joe blow's site is down for the count, so is that content on Steemit?
Yes. You said you owned the website, so that shouldn't be a problem.
This place would really get popular if you could embed videos, tweets, instagrams, and whole web pages. It doesn't seem like the cname thing would really do anything for it though.
Yea, I don't disagree with you. However, I don't know that embedded content from my site is necessarily the best solution. It'd be nice to be able to "market" my domain name and still drive traffic to steemit and earn steem dollars.
Embedding is also a must IMO.