Hello mate;

it's easy to use the Adfly plugins,
this is it :http://wordpress.org/extend/plugins/...dpress-plugin/

just add you adfly ID. easy only 4 steps:

The install process is same with another WordPress Plugins
  1. Go to Plugins-> Add New Plugin -> Upload
  2. Upload adf.ly.zip
  3. Activate the plugin.
  4. Navigate to Settings-> adf.ly Settings, enable plugin and put your adf.ly id. To get it, login to adfly, then go to http://adf*****tools.php?easylink find http://adf*****xxxx/www.google.com). xxxx is your adf.ly id