Add a Google+ (Plus) badge whene hover the user name, like plus.google.com.
Check out an example here http://www.alessiomoretto.com/google-badge-per-gli-utenti-plugin-wordpress/
Usage: use a shortcode like: [gplusnamelink id=”ID” name=”WORD”]
Where id is the ID of the user (go to user profile and get the number) and word the text linked.
with PayPal on email@example.com
Install like other plugin