This has happened to me multiple times over the past month and it is something I have rarely seen in my 58 years on the air. I privately e-mailed the hams involved but decided to post this here since it seems some hams are unaware of what many of us believe to be a time honored protocol. Maybe this will help educate. Here's the scenario. I am working stations on 40 meters (SSB) in the early evening--something I do most nights. Rag chew rather than rapid fire QSO's. Usually on 7210 or above to avoid the congestion down below. It is not unusual for me to have 5-6 QSO's with different hams over a 1-1 1/2 hour period. As QSO's finish I say thanks and I'm going to work a few more before going QRT for the evening. Now I know that no one "owns" a frequency. But if I have been making a series of contacts on the same frequency for a period of time and when signing off with my last QSO plainly say I will call CQ again I don't really expect that if the station I am signing with gets a call from someone that he will assume the frequency is now his. After all this isn't the Sprint Contest! Sometimes the station I am signing with gets a call from someone (who wants a signal report or needs that operator's state for WAS) and I'll stand by while they have a brief contact. Most often the station I have just worked will make the contact with the staion calling him/her but say something like It is N7WR's frequency let's keep it short or QSY. We've all done that and over my years as a ham that seems to have always been the informal protocol. Well recently there have been multiple instances of the station that answered my CQ taking the frequency over when we were done and just assuming he could work as many as he wanted to for as long as he wanted. Again, I realize I don't own a frequency. When this has happened I have either found another frequency to call CQ or have just decided to go QRT. Tel me if I am wrong but this "practice" I have described runs counter to operating procedures that have existed for decades. Maybe newer hams just don't know???