I have a few self-signed certificates that I use, and I find it tedious comparing the entire hex value of the hash when accepting it in a new location. To be honest I usually just look at the first couple or the last couple digits. If it were in some kind of visual form like gravatars are in, I feel like I would more easily identify whether or not they are correct.
I should probably be copying the certificates across as files and installing them rather than manually checking the hash and then accepting them but it is just so much easier to simply accept them sometimes.
Probably if it's something a human can identify right away visually, then there's not enough entropy to be very confident in its identity. I am just wanting a better way than looking at the first couple digits to bridge a bit of the gap between what's convenient and what's truly secure.
Is there any merit to the idea of certificate viewing software showing a gravatar/identicon for the hash of an SSL certificate, to aid in identifying it?