I just got a notification that I earned the Tag Editor privilege. Problem is I don't know which tag it was for. Is there a way to determine at a glance what tags you have Editor privileges for?
The tag-wiki edit privilege is earned at 1,500 rep - which you've just past. This gives you the ability to create and edit tag wikis - short pieces of information that explain what the tag is about. It's not a badge.
To be able to edit tag wikis:
.. editors must also either
- be in the top 20 answerers for the tag, or
- have a total score of 100 or more for the tag on non CW questions
Actually this isn't strictly true any more. If you are in the top 20 or have a score of 100 you will be able to edit as normal, but any user can propose an edit to tag wikis in the same way that they can propose edits to questions and answers. The edit must be approved by a user that meets the above criteria though.
Look in your profile to see which tags you have a score of 100 or more, and check the top users page (C# Top Users) where you'll see if you are in the top 20. You are currently 8th - so you can edit that tag wiki.
You will get the badge on your first edit to a tag-wiki body and it will be linked to from your profile page. See which one I got it for on Stack Overflow.