lexipixel - 6:10 pm on Jun 26, 2012 (gmt 0)

I had read that it only affect accounts that use Timeline.

No, it is not restricted to timeline user's accounts, (and why would that matter anyway).

In the earliest days of Facebook you could claim your screen name, (e.g. -- lets say I wanted to be sure to tie up "exampleguy"). That would give me the user name "exampleguy" and I could use the direct url of:

www.facebook.com/exampleguy

Under the new @facebook mail scam, that makes my email address:

exampleguy@facebook.com

But, since I didn't want my personal friends to know I was in the "exampleguy" business, I added a personal email address and set the myriad of FB account settings / privacy setting to show the email address:

justme@example.com

but, the new system, now displays my exampleguy@facebook.com to everyone instead -- outing me as the "exampleguy".

(privacy advocates can substitute "exampleguy" for anything else and see how this could cause problems).