Track where posts came from
A user should be able to see that a post was syndicated from another source and where the post originally came from
@tomjn I have added the Source URL into the Syndicate meta box. Please check and let me know if you have any changes on that.

That PR should work for syndication done via XMLRPC, but it won't for REST/RSS. I was hoping to build it so it kept a chain/breadcrumbs of where it's been, and have it generic.
The reason being that users can syndicate from site A -> site B -> site A, causing problems, so it needs to be able to show further back than 1 step
Hi, @tomjn Thanks for the checking my PR.
So, we have to display the source like SITE_NAME(From where it's come) > SITE_NAME(Current site) right?
Correct me if I misunderstood anything wrong.
So the ideal situation is that if a post is syndicated from A to B to C to D, then on site D, you can see that A/B/C/D trail in full, or at least as far back as is possible.
This will be necessary in order to stop the post being syndicated back to site A or B causing a neverending loop and unexpected consequences
I'd suggest that the data format and the saving be done before the UI, as it'll need to work with all syndication methods and be reliable