I gave @Klout +K about Infinite Loops on @Klout.

I click a "Sign into Klout now to view all your notifications" link in an email from Klout. A browser window opens and starts to load a page on the Klout web site. It endlessly continues to load. I can't stop the loading. I can't close the browser tab. I can't close the browser. Nothing stops it.

I finally get it to close by killing the process -- which has gobbled up over a gigabyte of memory -- in Task Manager. I restart the browser, and the infinite redirection resumes.