See here
Updated: Using Scheme’s Eval in Sandbox
See here
Updated: Distributed Programming in Scheme
See here
Updated: Lisp code is not a parse tree
See here
Updated: How to print a PLT Slideshow to a file
See here
Updated: What every Subversion user must know about Git
See here
Updated: Chicago Lisp 5/16 Meeting
See here
Updated: Lucida Console Font on Emacs
See here
PLT Scheme version 4.0.1 is out
PLT Scheme 4.0 is out
Bill Clementson wrote a great post about it here.