I dislike external links in the wiki.
I would like to see all tutorial writers to add their complete tutorial inside the wiki with the legal notice of its origin.
Agreed, would also keep the wiki more consistent and manageable.
@ste3e if you don't mind, I can copy, paste the contents of your articles and format it nicely so it fits into the wiki, of course will keep the article credited to you and link to the originals.
@Kappa: We could post the complete examples on the wiki and additional your idea with the demo page for their execution. Guess that would be a good combination. Seeing the example run and looking at the code 
yeh, the tests for shaders are already in the svn repository, so guess its just a matter of adding the links to the
http://lwjgl.org/demos.php page and creating a jnlp file.