That's very likely
AME - Auto Media Embedding . The Geek originally made it to where the little logo appears beside the link. Then someone created a definition that auto inserts the affiliate ID. Someone then made a thumbnail definition, which I've since tweaked to include the foreign language Amazon sites, as well as aStore links:
You can find the updated Thumbnail, aStore and Formatted Link with the little logo definition in the Add-On for that modification.