Useful for adding links here to other articles, but I can't figure out how.
Frankly, a highlight and mouse click for copying a URL is much faster than the iPad touch method, but, perhaps, that will be speeded up in the future.
I have used the iPad "copy" as an Edit tool: Copied then pasted what I copied in another area of the mail, document, etc. that I was composing,Tap the URL area once until you get to 'edit' mode when the keyboard pops up. Then tap/hold it for a couple seconds again and you get select|select all|paste pop-up.
You can then select all and copy......