Hello – We’ve heard of Coral and haven’t heard of any compatibility issues thus far with CoralCDN. That doesn’t mean there won’t be some be we certainly haven’t had any. Coral might produce a cross domain problem which means you’ll have to take a few additional steps during implementation. If so you can read about it on our wiki here
But because of the ease of implementation with Swarm and WordPress you can activate Swarm and then start looking at your stats for the how the Swarm is working.
Regards,
Jesse
Swarm CDN