"The word "I" showed up in both of those sentences. To most users, unifying all of their data adds a lot of value."

So you want your every identity online to be tied together? Your usenet posts to alt.sex.hello-kitty, your responses to ads on Craigslist, your interactions with old friends on facebook, your interactions with professional contacts on linkedin (if you use it), your interactions on some neighborhood blog, your political commentary on some political blog, whatever?

After all, if you were describing all of them, you'd use the word "I"!