In SE in general, we don't have intros or sigs. It's streamlined and lean, focusing on just the content.
When I post a question that has a major brand-name product tag like adobe-illustrator do I need to say "Hey, I'm using Illustrator!" in the Title and/or the start of the body as well? Or will people find that redundant and out of character for the site, since the question is clearly labeled as concerning that product.
In my recent post I added the product name to the end of the body, along with more specific version information, which would be useful in the future and is not part of the tag. So it was out of the way, and arguably added something.