Thank you Dr. Prabhakar for answering and thank you Tantek for the guidance and encouragement. I was a little scared that I might have annoyed the people at this list. (Sometimes I try to sound polite or humble and it ends up sounding rude. The worst part is I then try to correct it and it comes out even worse. :-) And then I get really paranoid...  I guess I'm a little scared since I'm new to this kind of thing and I have read and studied documents writen by people on this list. So it's kind of scary. Well.. you know, There is a human side to all of this!! :-).. ) <div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The next step is to start a listing-brainstorming page wherein you start to do some analysis of the research you've done, and document some your analyses.</blockquote><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> First among these will be to document the "80/20" of the properties/fields that current examples use. That is, given the examples you've researched, what fields/properties do 80% (approximately) of the examples use or represent?  What fields/properties do the "majority" of the examples use?  Consider giving more "weight" to the implied schemas of sites that have more examples. This kind of analysis should be fairly straightforward.</blockquote> <div> Yes, a pattern seems to be emerging. This makes sense as methodology. Will start working on this today. I hope Trevor will be happy to join me and we will be able to get this going.  </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The next step, the art of taking that analysis and coming up with a proposed schema, is a bit more challenging and can often use the experience/expertise of someone who has done at least some format design.  There are several such folks here, so once you have gotten the "listing-brainstorming" document to that point, ask again on this list, and hopefully one or more folks will help out. </blockquote></div> I was scared you were expecting us to get this all on our own!!! (Or that I might have given that impression. ) Again Tantek thank you for your kindness and understanding. I'm just a little insecure since I'm new to this kind of thing. I was really scared I might freaked you people out. It's a relief to see I didn't (or at least not that much) :-) Emiliano Martinez Luque TheThingsIWant.com