To save you a little effort, we automatically log you in to meta with the same information as on iFixit.com (same email, username, avatar, etc.) We start everyone on Meta at 100 right now so everyone can comment. (The plan is to eventually only give people 100 points on meta once they have earned 200 points on iFixit.)
The source of your confusion is a bug with the avatar import into Meta. Avatars are not showing up correctly right now, and people are getting the wrong avatar. We're working on it.
