Besides having checked that the plugin works with the currently latest WordPress 3.8, there are a few important and useful additions – with the latest version 2.5.0 of the Affiliates plugin we now have:

• Commission totals are shown for each affiliate in the Affiliates > Manage Affiliates section.
• A new dashboard widget that shows the total accumulated amounts for all affiliates by referral status. The widget includes the complete referral history by default and a number of days can be specified to reduce the period considered to the last n days.
• A new shortcode [affiliates_earnings] has been added that lists the monthly earnings for affiliates. In newly generated affiliate area (under Affiliates > Options), this shortcode is now included automatically. Existing affiliate areas can be updated by included the shortcode manually.

http://wordpress.org/plugins/affiliates/