Post to Ping.fm from FireFox. Supports all of Ping's content types. Supports your own custom triggers as well as posting shortcuts (@tt for Twitter and @fb for Facebook, etc). Easily accessible from anywhere on the web. Quoting. Simply select something on a webpage you're reading and click the "Ping" button. The selected text and the current URL will be added to your message.
-- If you're having trouble with the add-on please contact me using the support email. I'd love to work on your issue but simply posting a review usually doesn't provide me with enough information --