In days gone past, there used to be handbills with the name of the local speaker and the title that you could share with students and people at the door, inviting them to come on Sunday. With some talks there would even be a campaign going door to door just to hand out invitations. Now if they have handbills, they are generic ones with the time, date, and location of the meetings and few JWs use them.
The public talk also used to not start with a song an prayer so that people from other religions did not feel uncomfortable. There used to be a 15 minute break between the talk and the WT study to allow for convenient exit by the "public."
The public talks used to be topically designed for the public; now the coordinators pick talks for the "encouragement" and problems of the local congregation.
Blondie