We implemented hReview-agregate on our review site more than a month ago but Google still doesn't display the little stars in SERPs. Our site ranks very well, individual pages are in top positions in 99% for all relevant searches above our competition who do have the review summary displayed with their listings.
Here is the syntax:
<div class="hreview-aggregate"> <span class="item"> <h1 class="fn">BUSINESS NAME</h1> </span> <p> <span class="rating"> Rating: <span class="average">1.5</span> out of <span class="best">5.0</span> </span> based on <span class="votes">23</span> ratings. This page contains <span class="count">19</span> user reviews of BUSINESS NAME </p> </div>
Users can review or just rate businesses within our niche.
Are we doing something wrong or are we just too impatient? Thanks.
Well, I do think you should wait a bit longer - and never assume that Google "will" do what you want them to with the data you offer.
Google lists the formats here: [google.com...] I see one small departure for the format they suggest - the second mention of BUSINESS NAME in "user reviews of BUSINESS NAME" is not included in their suggested mark-up.
We started it months ago on several high-traffic, well-ranking sites- nothing yet.
I have yet to see stars in SERPs for any sites except those with tens of thousands of reviews (Yelp, Trip Advisor, Urban Spoon, etc.). I'm still hoping that the rest of us will be picked up some day, but I'm not holding my breath. (But we're not going to stop doing it either.)
Thanks for your responses. I agree with LifeinAsia - it seems that Google displays the stars next to links to the biggest review sites only. Ironically, in our niche we have more reviews than any other site including ReviewCentre, DooYoo, Ciao, etc. which Google kind of recognises by placing pages from our site above others in SERPs.
Right now I'm looking on a SERP with first 2 links going to our site and the rest to other big sites, yet ours and two more on positions 8 and 9 are the ones without the stars. Well, I guess we can only wait.