Another great idea will be opening its Web 2.0 doors soon in the form of classified items and blogging. This new service, Edgeio, will allow you to post the classified ads to your blog (much like people do at craigslist or ebay) and tag the post as “listing”. This will get picked up by the Edgeio system and the people that browse that system can find the products they are looking for. I think the concept is ingenious and I may just have to start researching more uses for tag specific uses myself.
The way Edgeio works is that bloggers would post items they want to sell right on their blogs, tagging them with the word “listing” (and eventually other descriptive tags). Then, Edgeio will pluck them as it constantly crawls millions of blogs looking for the “listing” tag and index them on Edgeio.com.
Also, Edgeio sends a trackback to the blog, providing a way for the blogger to go to Edgeio and modify the listing, adding other tags such as “autos” and other data that will further help the listing appeal to potential buyers.