do new ones take over, cuz I have some in my house...they seem bouncy and jolly. they're funny too,
I don't know what they want. if some mean ones might take over I will keep these ones,or, am I just having insomnia (I hear the voices of spirits a lot but always thought it was something wrong with me)
i moved into my house just over five years ago and was quickly dealing with a resident nasty spirit, he was passed on and not long after i started to notice another spirit presence, as it turned out it was a little girl who had been there all the time but was hidding from the first (Don't blame her i wish i could have done the same)
she told her story over the next couple of years of how she had died in the house in a fire due to bombing during the war and could not escape, i learnt alot from her about the history of my house and she is still with my family to this day (scarily i do hear my daughter of six talking to her some times and playing) but overall she didn't replace the first mentioned spirit and i have had none try its just her.
to your second point they may want nothing from you except to be able to stay there where they feel secure but if you are hearing them regularly maybe a meditation to help you focus on what they are saying, or a simple polite request for them to speak more clearly or give signs of what they wish you to know.
hope this helps