I just happened to notice that my Battletag is showing when I view other people's profile page (instead of theirs). I checked in both Google Chrome and IE just in case it was an issue with my browser.
i.e. When viewing Joobjanka's profile, it shows Mattob#1633 (mine) instead of Doobjank#1625. memberlist.php?mode=viewprofile&u=57
I suspect that it's probably something as simple as mixing up the variable names.
And you're probably fixing it as I hit submit so that this post will be irrelevant....