Inspired by seeing comments in Google+ about the need for a WordPress cross-post, I whipped up a quick WordPress plugin: WPGPLus.
This means emulating the Google+ mobile web experience using Curl.
WPGPlus adds a box to the post edit screen where you can choose yes/no for publishing to Google+, as well as a place for a message to be used in the body.
(If you provide a Google+ message it is used; if you provide a post excerpt it is used; otherwise post content is used).
Anyway, check it out and let me know what you think!