This weekend we put some tweaks in place in order to identify the best possible quality version logo for an organization. We are now doing this by retrieving all of the possible detected logos and selecting the one with the highest width x height dimension.
This allows developers to feel better that the logos returned by the Embed API to show the best possible logo. (In the future, we might make it possible for the developer to choose which one to actually show, but we're still looking into whether this is even necessary)
My hope is that this increases developer use of the service, and eventually grows our traffic due to reputation.