In my search to have the iOS 6 default social sharing plugin, I landed up at this page. While everything seems right for this plugin, I somehow faced some problems in the UX. Thought would look a little deeper into it and found that this plugin relies upon the old plugin architecture of Phonegap. It still works, but then if it does not, you know know why.
Now to implement social sharing in my project, I have done a quick round of update to the plugin. Its working in my phonegap version 2.6. And that should work on Phonegap 3 as well, as the new plugin implementation has not changed after version 2.0.
Here is the github link for the new plugin.
While currently this plugin only shares the link and the message, you have to send a third parameter as an empty string for the image parameter. I will do the code cleanup and fix as I get some time to look into it. For the time being, its ready to use in new Phonegap versions.

Happy coding