My excitement is that Mark, who has been extremely staunch in his belief in "Facebook identity" (First Name/Last Name/Profile Pic, Online == Offline), is starting to consider alternatives to that. It remains to be seen what that will ultimately amount to for Facebook's product/app offerings, but it's a huge shift in his personal beliefs.

I wrote up some thoughts on Snapchat's mainstreaming of anonymity/ephemerality a few months ago -- and believe there are huge opportunities out there for people who will go where Facebook/Google won't: http://chrishateswriting.com/post/67378144174/ephemerality-g...