Coverflow is good, and adds some content to the otherwise empty profile pages. As users upload more and more photos (I have facebook contacts with over 300 photos) its going to be less and less realistic to display them coverflow style.
Introduce a Top 8 photos option (like Top Friends on myspace), and have link (All Photos) to a thumbnailed page that displays all of their photos. The most important part of this would be letting the users choose which photos of theirs are displayed cover-flow style, letting the user customize their page even further.
Another aspect of this would be a search function. Change the way photos are browsed: allow sorting by user or search for specific users photos. You could use this function to display the users photos when All Photos is clicked on.
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