Feeling particularly adventurous? Try the Pastecard native iOS app. Download the project and follow the instructions in the README to compile and install it yourself using Xcode.
Type your username into the field below to generate a bookmarklet, and then drag it to your bookmarks bar.
When you invoke the bookmarklet, the current page’s URL will be appended to the bottom of your Pastecard. If any text is selected on the page, the text will be appended instead. Any additions over Pastecard’s character limit will be truncated.
Deploy a single-user instance of the regular Pastecard web app. Your host will need PHP 5 and SSL.