This sounds like a great plan. A good added feature is options for users where to place it or to keep it hidden and just provide a button to show the contents; or maybe they could opt in or opt out of it.
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Thanks, I think the question has become whether it is feasible to insert this within a post - so that people opt-in merely by adding some code - or whether this has to be somewhere within the UI?
I don't think it's possible. I did some research last year on how to accomplish this and the only way I could determine how would be modifying the UI for steemit/chainbb/etc.
The only way I could come up with how to do it would be dynamically generated images (used as signatures basically), but that doesn't work either because all images get cached via steemitimages and don't refresh. That means old posts would never see updates and it would basically take a snapshot the first time you used that specific URL.
If we could get a whitelist of domains that prevented this caching in the UI layer - then using images would be possible :)
Thanks. The way widgets do it in blogs such as Wordpress or Blogger is to insert code in the "head" that allows javascript, then in the "body" of the post insert the js script. That then generates the thumbnails/title just as in the post streams on steemit and chainBB.
So yes, it needs code inserted into the UI, even though the block appears inside a post. I can show you the code run by LinkWithin - I have a copy.
So could be achieved in chainBB even if not in Steemit?
This has to be within the UI. Markdown is pretty limited. I don't think the post submissions will accept codes as complicated as this one (I don't know much about coding but I'm guessing it's gonna be like that).