We have similar results to Sean with our Vufind instance for the same
reasons (interlinking, stable urls, etc.). Additionally Vufind has a
sitemap generator [1] which spits out sitemap.org sitemaps for all the
record pages and some predefined static pages. Submitting the sitemaps to
the various webmaster tool sites of Google, Yahoo, Bing again bears out
what Sean said. Bing and Yahoo don't index much, whereas Google webmaster
tools shows that practically 100% of urls are in the index. We also have
about 60% + hits from Google.

The schema.org approach is interesting & very doable when working with
something customisable like Vufind, Blacklight etc

Eoghan

[1] http://vufind.org/wiki/search_engine_optimization

On 23 February 2012 19:10, Jonathan Rochkind <[log in to unmask]> wrote:

> On 2/23/2012 1:37 PM, Sean Hannan wrote:
>
>> Anecdotally, it would appear that bing (and bing-using yahoo) seem to
>> drastically play down catalog records in their results. We're not doing
>> anything to favor a particular search engine; we have a completely open
>> robots.txt file.
>>
>
> I think they're probably right to play down catalog records!
>
> I wonder how many people searching on google and ending up at our catalog
> are actually satisfied with what they get there -- info on how to check the
> book out if they were affiliated with our university, or where to find it
> on the shelves if they come to baltimore? An electronic copy that most of
> the time they can't access without being affiliated with our university?
>