lucy24 - 7:39 pm on Sep 1, 2012 (gmt 0)
"If it is an URL, we will index it."
Is there a thread that explains how to attach a "noindex" directive to something that isn't html? robots.txt and sitemap.xml will do for starters.
:: quick detour to check obvious corollary question ::
SO FAR, an image search for "favicon" does not bring up a slew of actual sites' actual favicons. But give them time; I'm sure it is merely an oversight.