Pocket (iOS) - After copying a URL, opening the Pocket app will automatically prompt you to save the content.
/via Myles Tan
Google+ - When posting a link to Google Plus, it replaces the URL with the title of the page the URL points to.
/via Wouter van Vliet
Mailchimp - The logout URL says “see ya later” to the user.
/via Guillaume C.
Instapaper - When copying a link and opening Instapaper on iPhone it asks if you’d like to add it.
Google+ - When inserting a URL from Youtube into a comment the URL is automatically transformed into a legible structure.
Firefox - If you start typing a URL and you already have a tab open of that URL, the first option in the dropdown offers to switch you to that tab.
Goo.gl - When selecting more than one link from the list, the hide button starts showing how many URLs you will hide.
/via Marian Buhnici
Google Url Shortener The feedback of how to copy the link changes, depending on the device and OS
Google URL Shortener - After shortening a link the shortened link is automatically selected.