If you were going to create the RDF classifieds, there are some RDF building blocks you’d like to have.
Each for-sale item will have:
– A price.
This is a semi complex item. What is the actual price? What currency is it in?
– Shipping terms
Paid for by seller? How much? Paid for by buyer?
Presumably, robots will want to know how to categorize this. There is an RDF Taxonomy module which leverages the DMOZ categorization scheme. I hope dmoz promises to never change the taxonomy?
– Contact info for seller
Contact him by phone? By email? FOAF is probably the answer for this one.
Where is the item?
And, these aren’t new ideas.
I wish there were standard building blocks for things like prices and such though.