After reading this comment thread about Facebook logins on ReadWriteWeb, I feel sad to call myself a Facebook user. The sheer number of clueless users who actually thought ReadWriteWeb was Facebook is a sad fact. The fact that they login to facebook by going to Google and typing in "Facebook Login" is also sad. Could they not simply type in facebook.com? I guess the idea of a URL is too outlandish for people.
What about a bookmark? My grandma, who only does a few things on the web, knows how to make a bookmark and go back to it. A lot of the Facebook users who posted comments looked quite a bit younger than my grandma, and, apparently, they cannot figure out things she could do in her sleep!