OpenID anti-phishing technique
If you are using OpenID i strongly recommend that you use this little feature which is allow you to upload an icon or personal picture to display it in the verification site (myopenid.com) title bar so if you didn't see this picture theres a chance that someone trying to phish you.
The idea is that if some one make a sam page like myopenid.com he wouldn't know which picture you choose to display, the picutre will be stored in cookie.
will be displayed, for your browser on this computer only, in this site's title banner. Since no other site will know what image you uploaded, they won't be able to display it. This means that if you see your image in the title bar, you're talking to this site and it's safe to use it. If you see something that looks like this site, but without your icon, you should be suspicious.
for more information click here.