I get by fine without copy/paste, but I would do more with my iPhone if this capability existed. I've tracked packages and manually writing down a tracking ID from the shipment email, then typing it into Safari can be a royal PITA, especially now that UPS doesn't create a URL string with the tracking ID embedded so I can save it as a favorite until I receive the package.
There have been times I've wanted to copy/pasta URLs to email to myself and I haven't been able to do that either.
So basically I didn't vote in the poll because I don't feel either of the first two options fit how I feel about copy/pasta, but I do believe the iPhone would be more functional for me if this functionality was implemented.