Your "get the code" page uses the older script:
http://s7.addthis.com/js/250/addthis_widget.js
...but your examples for customization use version 3:
http://s7.addthis.com/js/300/addthis_widget.js
Version 3 looks much better. Is it still considered beta or is it ok to use?
AddThis 3.0 is still considered beta, but we're hoping to release it soon.