^ Really GERGIN? Is it pathetic when other designers use signature flourishes to signify that a product is theirs, or is it just in this case because you disagree with it? And not to be rude but that's a pretty hollow attack on something that, frankly, nobody ever questioned before Christian Louboutin piped up to protect his use of something as a branding tool. Besides, there are plenty of other signature Louboutin flourishes; heel shape, hidden platforms, silhouettes.
And where in any of this has anyone stated that YSL's intent was to copy anybody? The intent isn't what's been argued. Nobody thinks that YSL attempted to slyly knock off Louboutin, it's that Louboutin clearly feels that the red sole is as much his logo as the famous "YSL" is to Saint Laurent, and wishes to protect that signature. Again, why is he wrong for that?