Since PingFire just support English characters, I decided to create this bookmarklet for opening Ping.fm's Pingout pop up window from wherever I am browsing, just by clicking on the bookmarlet in my bookmarks toolbar. So now my posts in Spanish don't loose accents along the way, and I have one less extension in my browser to care about.
Just drag the bookmarklet link above into your Firefox bookmark toolbar and try. Of course you need to have an account in Ping.fm and log in before you can post anything.
I tried to code the bookmarklet to set the input focus on the message field but couldn't figure out how to do it. If you can help leave a comment!