Google Security Sustained Support:
http://www.google.com/about/corporate/company/security.html
Facebook Security (WhiteHat Thank you list):
http://www.facebook.com/security?v=app_6009294086
Twitter Security (Whitehats Thank you list)
http://twitter.com/about/security
PayPal Patches Critical Security Vulnerabilities:
http://www.eweek.com/c/a/Security/PayPal-Patches-Critical-Security-Vulnerabilities-807636/
Gaining Administrative Privileges on any Blogger.com Account, 1337$ (Google Reward Program)
http://www.nirgoldshlager.com/
Dropbox Special Thanks (Whitehats list)
https://www.dropbox.com/special_thanks
Gmail Account Hijacking (Cross Site Scripting)
http://www.eweek.com/article2