aLightningbug

I think I’m completely not doing Gravatars correctly. I would expect my avatar to be pretty much the same all the time — that’s the point of a Gravatar, right? But sometimes I see the generic pattern avatar, sometimes my black & white cat next to a tea kettle, and sometimes the stylized image of my daughter gazing at a lightningbug (blue and pink tones with glowy dots). I’m not sure what everybody else sees. The same mix I do? One, but not the others? Help?