As you watch, Erdolliel realizes that, while none of the passersby seem interested in the raving man, some have noticed the party watching him. As the elf catches one man's eye, a congenial enough seeming worker, probably just about his business, the man walks over to the group.
"Ho, and good day, folks! You're not from 'round here, I can tell. Pay the poor man no heed. Old 'Rain Barrel Man' (that's what we call him) is here pretty much everyday shouting 'bout this 'n that. I think last week it was something about 'the dragons of the rift and the sins they proclaim' or some such crap."
Just after the worker gives his two coppers, "Rain Barrel Man" loudly coughs and begins again. In fact, it quickly becomes apparent that he is simply repeating, verbatim, what he already said.
Neither Bazrim nor Erdolliel notice anything peculiar, symbols or the like, or even others taking any real interest.