Pfui - 5:50 pm on Dec 1, 2010 (gmt 0)

@Lame_Wolf:

Do you see any site's icons? If not, what people (do/don't) see is still browser-dependent at this time. Did you try a Safari architecture-based UA? For example, on my Mac, Apple's Safari shows the preview icons, but not Firefox. See also: [sites.google.com...]

Alternatively, if you do see others' previews, do you use "x-robots-tag" elements in .htaccess, and/or use page-based meta tags? If yes, make sure yours don't include "nosnippet." (Took me a while to remember I'd implemented both.)