52 people, many who are not regular PCJM readers, have commented on my Hunt for Taco Doritos post.
It helps to be the #1 Google result for "Taco Doritos." However, my post is pretty useless, since I don't know where to find them.
The #2 Google result led me to Fort Wayne Grocery, which does indeed list Taco Doritos as something that can be ordered online. But I can't attest to whether they still have them. They apparently did as of 2004, according to this site. If someone does find out, let us all know.