Don't we need a whish list for this?! I started this thread a while ago;
http://forums.comodo.com/melihs_corner_ceo_talkdiscussionsblog/where_to_post_informationwhishes_of_certificates_for_websites-t8696.0.html but then completely forgot it.
So, if you whish, please post addresses to E-merchants you think need Comodo certificates. Remember, we won't get the firewall for free unless Comodo make money!

Personally I don't have much here, unfortunately. I only shop online from two sites and they already use some kind of certificates:
-
Kaffegrossisten (coffee), already have something called
TrustKeeper.
http://www.kaffegrossisten.se/-
CDON (music, movies etc.), already have something called
DIBS-DebiTech.
http://www.cdon.com/