If you don't, then you undoubtedly haven't. Nevertheless, we are witnessing a very vociferous political movement trying to slamdunk RDF into the mainstream. RDF is meant to be the foundation of the semantic web. The problem is, half of the people who know what RDF is cannot decide what the semantic web is. Today is a peculiar time in the software industry.
People write standards first, then look for problems to solve with the standards.
Like Fermat's last theorem. Umberto Eco could not have painted a more surreal scenario. Those of us prone to wild syncretism could deduce that this is a sophisticated plot hatched by Tim Berners-Lee and R.V. Guha, to so mystify the industry that whatever the next stage of evolution of the Internet, we will think that it was caused by RDF, sing praises again to the creator, and Tim will ascend into heaven. Now, to be fair, there just might be something to this semantic web prattle. A better explaination is that companies are insanely posessive of the semantic information that they worked so hard to discover , and they want to make money off of semantics.