Want printer, pay cash – want RDF, pay index

My housemate was selling a printer and asked me to advertise it on the DERI mailing lists. So I did, and a few minutes later Giovanni wanted to buy it. When I entered his office to settle the deal, he entangled me into a discussion about RDF: “What are you doing?” – “A semantic wiki for mathematics.” – “Does it export RDF?” – “Yes, it does.” (but it was buggy). Anyway, he is highly interested in any kind of RDF-producing applications to feed their Sindice semantic web index. It can crawl RDF exported from applications, and it offers cool widgets for finding related web resources to application developers. I will have a look into this.