Well, I for one don't have much use for "nets". Not all nets operate that way however. I have heard nets on 40 meters that state "frequency +/-" when they announce where they meet. They understand that sometimes it is impossible to be on a "set frequency". I think that net frequencies are carry overs from channelized days. Nowadays, VFO's allow the net control station to move a little one way or the other. Another point. If they are 1.5 kHz down/up from you, then your selectivity could be better unless they are splattering. You should be able to "notch" them out better then that. I usually move slightly, say .5 khz up or so to give them and me some room. If they come onto the frequency and start harrassing you, then start recording and documenting them. I have seen one net on 20 meters, 14.247 that does that. The Net Control Station harrasses individuals near the net frequency frequently, forcing them to QRT or QSY in order to stop putting up with the harrassment. That is illegal to me, but like already posted, enforcement is nearly non-existent. That is one reason I prefer CW. You get none of that big mouth rudeness you find on SSB. Get use to it. With the continual dumbing down of the requirements, the lack of operator skill, this will only get worse over time. But then again, when CW goes "away", then I suspect I will have to switch to some other mode! GL!