Girls talking to me on msn

Only a select few of my immediate friends talk to me online (ie- msn, facebook). So when someone talks outside this normal circle of people talk to me, I get very wary. Here's one of the msn virus spamming people that talk to me.

[03:02] Yoko: hi 
[03:03] XXX: oh no 
[03:03] Yoko: hi 
[03:03] XXX: hi 
[03:03] Yoko: AUTO-RESPONSE: hey just in the middle of my free webcam show if you want to watch click the link http://www.localsocialcam.com/vicky  
[03:03] Yoko: AUTO-RESPONSE: hey just in the middle of my free webcam show if you want to watch click the link http://www.localsocialcam.com/vicky 
[03:03] XXX: oh no 
[03:03] Yoko: AUTO-RESPONSE: hey just in the middle of my free webcam show if you want to watch click the link http://www.localsocialcam.com/vicky 
 [03:03] Yoko: AUTO-RESPONSE: hey just in the middle of my free webcam show if you want to watch click the link http://www.localsocialcam.com/vicky

Here's more:

[16:26] risataruc85@hotmail.com: Waiting On A Good Man [16:26] risataruc85@hotmail.com: hey

Btw, i removed the links. My msn dp isn't XXX, it just changed it for privacy means.