Index: includemacro/macros.py
===================================================================
--- includemacro/macros.py	(revision 11338)
+++ includemacro/macros.py	(working copy)
@@ -28,6 +28,7 @@
     
     # IWikiMacroProvider methods
     def expand_macro(self, formatter, name, content):
+        content = content.replace('$USER', formatter.req.authname)
         args = [x.strip() for x in content.split(',')]
         if len(args) == 1:
             args.append(None)
@@ -106,4 +107,4 @@
         yield 'INCLUDE_URL'
             
         
-        
\ No newline at end of file
+