Maybe it's because no one (like myself) thought of submitting those kinds of links.
Observe:
https://github.com/jpallen/clsi
http://code.google.com/p/common-latex-service-interface/
http://code.google.com/p/latex-lab/
http://www.verbosus.com/
http://monkeytex.bradcater.webfactional.com/
and the parent article's service
Observe:
edit: formatting