Generally speaking, the pop-up windows on the Player Profile pages aren't a good idea. Pop-up windows are never good solutions in terms of usability. They aren't user-friendly.
Before the most recent product update, it was pretty neat, browsing through the various "tabs" of users' profile pages. Now, it's rather tedious to have to open a pop-up window every time you want to take a look at a certain section of a user's profile page.