Typedef considered harmful?

http://www.45mercystreet.com/computing/typedefs.html
I've read this guy's arguments and I'm still not convinced. Typedefs are incredibly useful. Say I'm implementing a tree to store ints but later I want to reuse it to store char*s if I don't use typedef I'm going to need to change every single instance that the int is used. If I had used a typedef I could have defined each node of the tree to contain a key_t and just change the type of key_t in one line. How is this code obfuscation?

So are typedefs harmful or not in your EXPERT opinion?

>>12

Are you really this god damn stupid? Or are you just trolling?