This is exactly, eerily, as stupid as graphic designers thinking in the late 90s that all users would want professional but personalized designs for their websites, a fallacy I was calling “Self-actualization by font.” Then the weblog came along and showed us that most design questions agonized over by the pros are moot for most users.
http://www.corante.com/many/archives/2005/01/07/folksonomies_controlled_vocabularies.php