Here in the NYC metro, our powerhouse Hot AC WPLJ plays a great TOH jingle. To my ears, a jingle on a heritage station, like PLJ which has been in the Hot AC/CHR Pop mainstream format for 25 years tomorrow, (6/30) it is a great branding statement. Other then the TOH, I don't hear any other memorable jingles, if any on PLJ. To the average listener, I would guess that it is not a priority. If one adds up all of the seconds spent on jingles over the course of a day, and it added up to 4-8 minutes, would listeners rather hear an extra hit or two, as opposed to a singing logo? Us radio professionals/fans/geeks love them-but if radio was targeting us, it would have a .005 share.