If you are running your own mail services, you might already have noticed, that there is a lot of SPAM originating (or actually faking) from @aol.com addresses. The layout of the mails is mostly the same all the time. The subject will have something like "Fw: News!" or just "Fw: " in it and the mail body usually starts with "Hello! http://" or similar. Following the link will bring you to some "lose some weight" pages- I haven't analyzed if some malware is propagated through them.