I am constantly getting unwanted spam instant messages wanting me to check out websites or messages that are just audibles from random users. And before I get answers from all the think they know it alls I know I can stop them by checking the setting for block everyone not on my contact list. I shouldn’t have to be the only option. I have never had this problem until yahoo messenger updated program the last 2 times. Is it a yahoo security problem, or a bug of some type because all virus and spyware scans have not stopped them. This is really starting to irritate me greatly!! Someone with real knowledge on this please help.