I believe this is related to the indexing process so I figured I'd toss it in here. I searched for my own posts to try to find some recent items that I couldn't track down just by looking at the forum lists, and while only getting older stuff is expected (for now), I actually got some results of posts that show my name, avatar, and signature on the posts, but they are messages that I did not post.
For example, the last two messages in this thread say they were from me, but I didn't write them:
https://forums.anandtech.com/thread...hwu54g-at-micro-center.1702580/#post-17520047
It's not a really big deal since those messages are 11 years old. I just thought it was interesting..