I thought it might be helpful to collect up "questions we'd like to
hear from Google about" in one thread.  Maybe, if Google is listening,
they can monitor this thread and provide some feedback.

Please feel free to add your own questions (and/or answers) to this
thread.  I don't think you can edit posts on Google Groups, so I'm not
sure how I can keep one "master" list, but I'll try to figure that out.
======================
Note: questions aren't necessarily in any particular order, especially
not in order of importance.

1. Why does the "labeled <label> by <user>" line in the individual
search results sometimes include the "by <user>" part, and sometimes
not?

2. Why can I not see some of my subscriptions in the
http://www.google.com/coop/manage/subscriptions page?  I seem to see
subscriptions to topics that are in the directory, but not to other
topics (e.g., my own topics).  I can tell I'm subscribed by a) the
query behavior and b) going to the profile of the topic I'm subscribed
to and noting that the "subscribe" label toggles between "subscribe"
and "unsubscribe", depending on the state of my subscription.

3. What do attributes in annotations do?  Is this feature currently
enabled?

4. What do scores do?  Is this feature currently enabled?

5. How does the background label work?  Is it currently enabled?

6. Are there any plans to increase the limit of 1000 annotations?

7. Please describe the behavior of the default "mode" for labels.  In
particular, is the following behavior a bug?

While not logged in to a google account or subscribed to any topics, I
do a search on "walnut creek ca".  My second organic search result is
www.city-data.com/Walnut-Creek-California.com.

I create an annotation in my "cities" topic for this URL.  Here's a
snippet of the context and annotation files:

    <Facet>
      <Title>Audience</Title>
      <FacetItem>
                  <Label name="for_parents"/>
                        <Title>For Parents</Title>
      </FacetItem>
    </Facet>

        <Annotation
about="http://www.city-data.com/city/Walnut-Creek-California.html">
                <Label name="for_parents"/>
        </Annotation>

I now log in to an account subscribed to this topic (after having
waited long enough for my subscription to propagate).  I run the same
search, get the same organic results, plus the onebox for refining my
query, including a "for parents" label.

I now click on the "Refine your Cities search" link in the onebox, and
my new results are shown - same as the old results, except that there
are no oneboxes (the refinement one or any others, for that matter),
and instead, at the top of the results, I see my "refinement user
interface" -- a list of facets and labels.  One of the facets is
"Audience" and one of its labels is "for parents".  Also, under the
snippet for the www.city-data.com result appears "Labeled For Parents
by greyhnd". (greyhnd is me - the account that did the annotation).

All's fine so far.

Now, if I click on the "for parents" label at the top of the results,
the screen refreshes, the search box displays "walnut creek ca
more:for_parents" and the www.city-data.com site is *not* shown in the
results.

This was counterintuitive behavior to me.  The www.city-data.com
appears naturally in the organic results, but when I refine the search
with the "for_parents" label, which I've explicity assigned to this
URL, it no longer appears in the results.

Here's some speculation (really a question) about what's going on. The
result set, after  clicking on "for parents", shows a bunch of results
with snippets that all have "walnut" "creek" "ca" and "parents" in bold
font -- indicating that these are terms used in the search.   And upon
inspection, the result sites all appear to be about something to do
with parents in walnut creek ca, again supporting the idea that the
query was effectively modified to include the term "parents".

The problem is that this is not my search (I did not search "walnut
creek ca parents"), and google is acting like I did.  As a consequence,
the www.city-data.com site, which does not rank for "walnut creek ca
parents", but *does* rank for "walnut creek ca" and most definitely
*is* labeled "for_parents" in my annotation, drops out of the result
set entirely.

Note that changing the label definition of "for_parents" (in the
context file) to mode="FILTER" or mode="HIGH_PLUS" seems to generate
more intuitively understandable behavior (no "dropouts").

Try as I might, I cannot repro your "for_parents" behavior. Are you
certain you never, ever had a context file that contained a <Rewrite>
that added the term "parents" to the search? Or, never accidentally
typed the <Label> "name" attribute as "for parents" (which would tack
on the search terms "more:for parents" to the search)?

I can see that clicking on the "Refine your xxx search" can produce a
different set of search results. At the moment, I have the impression
that the revised search (in my test cases) does something like push
what was on the front page down a bit in the SERPs. I speculate that
this is some variation of pre-Co-op Google search results for varying
the SERPs over time (e.g., to see if some lower-ranked entries are
worthy of moving up). But that's wild-ass speculation.

The revised search I get when clicking on the "Refine your xxx search"
link does not seem to be influenced by my annotations, as far as I can
tell. That would make too much sense :-).

Maybe if <BackgroundLabels> worked, they would influence the "Refine
your xxx search" results.

Can't swear to that.  I'll try to reproduce the problem again.

Nope, didn't do that, I'm sure.

Glory be, my for_parents refinement works the way I expect it to now.
No more disappearing site in the refined results.  Also, the keyword
"parents" is no long showing in bold in the snippets for the SERPs.  A
bug fixed, maybe?

Sure would be nice to get some feedback from Google!

A most mysterious beta program so far.

Things are definitely changing in the docs and in the upload processes.
It's harder to be sure whether anything's actually changing at the
search engine point of the process.

If you see that effect again, grab the actual URL and post it. That
would at least rule some things in or out in terms of where Google came
up with the keyword "parent" to apply in that situation.