![photobucket](http://i649.photobucket.com/albums/uu220/blogwork/th_2009-04-17_191306.png)
You can of course change the number of seconds until the post is scrobbled. The urls will be shortened with Tinyurl or Bit.ly and also you can whitelist/blacklist some websites.
The installation process does not work like normal Firefox addons: you have to download the .xpi file and then drag and drop it to your Firefox window.