More bookmarks than expected reported in FHR?

[Brendan Colloran]

Hey folks, Irina (cc'ed) has been looking at bookmark usage in FHR,
and we're a bit surprised by what we're seeing-- 99% of profiles have
8 or more bookmarks, with the median number being about 19 bookmarks
(see plots attached). This seems too high given the assumption that at
installation time there should be only 5 bookmarks installed. We're
wondering if there is a bug somewhere that could be causing
over-reporting, if there might be something like other entries
recorded in the places database at profile creation time that would be
reported as bookmarks, or if anyone knows of some othre explanation
for the surprisingly high bookmark use and in particular the
surprisingly high apparent number of pre-installed bookmarks.

Let me know if you have any questions, and thanks for your help.

-Brendan (and Irina)
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