I recently saw a link titled "Donate to this plugin >" link on a WordPress theme (and then I did!). How is this added to a plugin's page on wordpress.org?
Here's a screenshot:
It is read from the infos on your plugins readme.txt. Example from my Default Values for Attachments
=== Plugin Name ===
Donate link: http://moraleida.me/
Tags: attachments, default values, caption, title, description
Requires at least: 2.5 Tested up to: 3.3.2 Stable
tag: 0.1 License: GPLv2 or later License URI: