I love Phusion Passenger. It takes away most of the pain from deploying. Instead of having to mess around with lengthy apache config files, you can just upload.
Signo is a website devoted to Applied Semiotic Theories. The study of Signs, Semiotics is the primary purpose of this site and explains various semiotic theories.
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C. Lagoze, and J. Hunter. Proc. of the Int. Conf. on Dublin Coreand Metadata Applications, page 160--176. National Institute of Informatics, Tokyo, Japan, (2001)
C. Matuszek, J. Cabral, M. Witbrock, and J. Deoliveira. Proceedings of the 2006 AAAI Spring Symposium on Formalizing and Compiling Background Knowledge and Its Applications to Knowledge Representation and Question Answering, page 44--49. (2006)