When a "new contributor" makes their first post the first comment is often something along the line "Welcome to [subsite]. Please take the tour." Where "the tour" is a link. When I saw this at first I always wondered if the "new contributor" had done something wrong since a link to "the tour" was needed. Numerous times I looked, but couldn't find the issue with their post.
Now I've come to the conclusion that the person who posted first comment is actually just doing it to be nice.
However, I think it has the opposite effect on many new users since they (like me) think they might have done something wrong.
Are there any guidelines on the site regarding this?