When I got home yesterday I checked my home e-mail. I had a bunch of identical e-mails in my inbox. When I looked at them, they were all the same. Someone was trying to register at
www.msds.com and had used my e-mail address for their confirmation. Once the e-mail was recieved, the person was supposed to click on the link to complete their registration.
Since
www.MSDS.com is a legitimate website for hazardous materials, I figure someone mistyped their e-mail address (though mine is quite unique), but 6 times!