doc/support/Template5.md

+= TBB no Flash/Java other plugins =
+
+{{{
+Tor Browser does not support external plugins for security reasons. External 
+plugins such as Java and Flash as full-fledged programming languages with no
+proper sandboxing can read sensitive local information and make outgoing
+connections without obeying the proxy settings in your browser. We are working
+on a properly sandboxed Flash.
+
+Youtube offers HTML5 video for many videos, which works fine in Tor Browser: 
+https://www.youtube.com/html5
+}}}
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