while researching for my new blog post, i came across 2 bloggers claiming to have seen breadcrumb trails in google SERP's. they even have snapshots of the same. Was google simply testing or are breadcrumb trails going to be included in the google SERP's? any news or information about it? if you want to check the snapshots, check my blog post or search for "Breadcrumb Trails in Google SERP's" in google.
I haven't noticed this before, it's an interesting thought, perhaps you are right and they were testing it out prior to a full release.