A WebmasterWorld thread has someone noticing that Google is showing rich snippets under a site but those rich snippets are coming from a different set of sites, not from the listed site's source code.
The search result is for [coldplay], a popular band. The result loads their home page and then what appears to be event rich snippets below the search listing. Here is a picture:

As you can see, the event information is coming from third party sites such as ticketmaster.com, vividseats.com, and others. How did they manage to get listed under a web page for such a popular brand? Is this specifically being pulled from these third party site's rich snippets data? I guess these sites are more trusted than others?
I assume this happens with other rich snippets?
Forum discussion at WebmasterWorld.

Comments:
chad_burgess
01/30/2012 04:41 pm
I do SEO for http://seatgeek.com/ so this is a pretty interesting development for me. If this was being pulled by most trustworthy sites, I would expect StubHub over VividSeats as they dominate the event ticketing SERPs among ticket resellers.
chad_burgess
01/30/2012 11:06 pm
Ok I did some more research on this if anyone is interested > http://chadburgess.org/marketing/google-upcoming-events-concerts-vertical-search
Megan
01/31/2012 06:39 am
It means google trust more trusted sites and will give weight to such sites.
chad_burgess
01/31/2012 05:49 pm
I guess my point, is that it isn't showing the most trusted sites. Seems to be somewhat random, with a clear preference for Ticketmaster (understandable/trusted), Songkick and ticketliquidator. But StubHub is nowhere to be found and easily the most trusted ticketing site in Google's eyes based on my experience.
SEO Journalist
02/18/2012 04:32 pm
It should be interesting to see who comes away with more authority in terms of influence for out bound links.