florescent_beige's Journal: How Anonymous is AC

For certain reasons I logged off and made a post as an AC. At the moment I have some mod points.

When I logged back in and returned to the discussion, I was able to mod all posts in that discussion except the post that I created as an AC.

How does /. know it was me that created that AC post? IP? Some kind of cookie magic?

What does the anonymous in AC exactly mean?