[Alan_SP]

That would probably create the same problem, but I just got idea that breadcrumb could be hidden from guests.

It would make it hidden from Google (and other search engines) also. And thus it would look like there's only one breadcrumb. Guests probably wouldn't use it as much as registered users who participate more actively.

And thanks for that info about {vb:raw breadcrumbs}, but for some reason it doesn't work.

So I further modified your great mod and added conditional in your template, that lower breadcrumb is shown only to members:

<vb:if condition="$show['member']">Show this to members only</vb:if>

Now only members see lower breadcrumb and Google sees microdata just as it should. If anyone want to use microdata information, I attached modified version (or of course, anyone can add conditional by themselves)