What image does the author use to describe Jordan baker and what it mean?

In F. Scott Fitzgerald's novel "The Great Gatsby", the author compares Jordan Baker's dishonesty to her dishonesty to "an advertisement of small station." This comparison suggests that Jordan's lies are small and trivial, like the advertisements one might see at a small train station. The image implies that Jordan's untruths are insignificant and inconsequential, akin to advertisements that often serve merely to attract attention rather than convey substantial information. Just as small-station advertisements don't carry great importance, Jordan's deceptions lack significant impact or consequence in the wider context of the novel's plot. Through this comparison, Fitzgerald subtly portrays Jordan's dishonesty as relatively innocuous and unimportant in the grand scheme of events.