Patch - Template for internet bibitems - "\beamertemplateinternetbibitems"
I created a template for bibitems refering to an internet source.
Like template options "article" or "book" you can use the template option "internet" to get a little wired globe symbol for the bibitem.
Similarly you can use the preset \beamertemplateinternetbibitems in bibliography.
The symbol is taken from the Tango Project and therefore in the public domain.
Since I don't know how to create a patch for this I uploaded the changed files in an archive: http://pipse.gmxhome.de/files/beamer_internetbibitems.zip (Files as of 30.04.2012 are the base for the modification.)