How to Export Your Facebook Friends’ E-mail Addresses

I'm not sure who these nebulous "many people have mentioned" are in your post, but the TechCrunch post you are addressing specifically states at the end: "Facebook has claimed in the past that there are sensitive issues around exporting contact information. But that hasn’t stopped it from pulling in whatever data it can. And it has also forged deals with both Hotmail and Yahoo that will let those services access its contact data. Google didn’t do a partnership with Facebook, so it doesn’t get the goods."<p>The TechCrunch post was certainly not arguing that one couldn't export to Yahoo. Indeed, that is exactly what Google is in a fuss about.

This is cool, but it mostly illustrates the danger of allowing random people you don't know to be your friends. If they can export all of their contact's emails, then you'll be on who knows how many spam lists.