An example of a site that doesn't do this -- the mobile version of Gawker stories. When I'm reading one of their stories on my iPad and want to push it to my followers, the entry box is pre-populated with the title. Which is always the same. "Gossip from Manhattan and the Beltway to Hollywood and the Valley." No matter what the story is. Not good.
Here's a screen shot.
Another peeve is sites that give me a special version of a page for my iPad. That's not necessary or even welcome. The iPad has a full-size web browser. I want your normal version. Another feature request for Gawker. Don't treat the iPad as if it were an iPhone.
Especially irritating are wordpress.com sites, which put up a Flipboard-like interface. I know I can turn it off, but I don't want to be bothered knowing how to do that. I just want to read the news, not be impressed by your programming prowess, or compliance with the latest Silicon Valley fad. I went to the blog to read what they had to say. I find it especially irritating when they do it to one of my own sites. That I pay them to host. Without my asking for it.
One more thing, Apple's insisting that Flash die clearly isn't working. As an iPad user, I miss a fair amount of stuff I care about. Yeah, it's too much trouble to get up and go to my desktop computer just to see what the video says. At some point Apple is going to throw in the towel on this one. Sooner the better.