Wierd and strange IM

Ok everyone, question for you all. I got an instant message today from someone that visits this site regularly. She said that I sent her an email saying she had AOL pictures waiting to be viewed. She said when she searched the pictures they came from Obesity Help website. I never sent any pictures and I have no idea who this person is. I did recieve a similar email a couple weeks ago and couldnt open pictures so I just deleted it. Has anyone else had anything similar like this? just thought this was very strange. The person that IMd be is an actual Oh member. Any thoughts? Kelli