the day after my son and ddil bought their new house they were listed. any public info goes right onto these sites. since it's public info, there's not much you can do. what they don't really know, they make up based on what they think is the right average of your neighborhood, etc. my little ranch house is worth over 1 million dollars. and all my pigs fly.
there are too many sites just like this. you can't track them all down. just stay off facebook, or anything that gives access to personal information.
oh, and google can drive down your street and show the world a picture of your house and car and entire neighborhood.