I have a new idea for a microformat that i haven’t found any matching format like.
Its for directory listing and may be can be extended to any listing.
Usually a listing is a simple thing like Google Directory listing:

Or the more Div based one in Blogarama.com

looking at both of these examples i see a need to embark on a standard for a directory listing. this should be based on the hList to create the hDirectory.
So what should be in the hDirectory as a must? things that are optional in the hList… interesting.
# listing action. Should be a Directory tag.
# description. required. text with optional valid XHTML markup.
# item tags. required. keywords or phrases describing the item being offered, using rel-tag
# permalink. required.

things that are an optional but could be very important:
# version. optional. text.
# lister. required. hCard | (fn || email || url || tel).
# dtlisted. optional. ISO8601 absolute date time.
# dtexpired. optional. ISO8601 absolute date time.
# parent-directory. can be usefull and can rely on the rel-directory microformat.

So taking the idea to creation it should look like this

Yesterday i was enlightened by a Microformat structure for online shops. apparently Jay Myers from Best Buy have pondered some thing similar before me. so i think i am joining forces with him to get my wishes come true.
Here is the wiki page for product Microformat

Does any of you own an online store? do you want to have a better semantic way to list your products?
So there is a need for a new Microformat.
I suggest to establish the hStore a new Microformat for an online store that will create a more semantic way to put the data in the store pages.
so what type of entities do we have in a store?
the lowest one is a Product. There is a brand, price, catalog number and specification to each product. The specifications can be arbitrary and are not standardized.
the Product is associated to Categories.
The categories can be associated into other categories so we can reach cascading categories.
what i am suggesting is something like this

I think that this way of setting up content will enable bots to get the information off e-shops and will make the likes of shopping.com and pricegrabber.com fetch data easily out of the web.
This might enable shops to make descriptive RSS feeds that enable consumers to register to a category of a store and receive all the products of that category in a fairly ordered way.
Now i am going to post this to the review of the Microformat org.