Why does Google think I'm another email?

So confusing....

I signed up with MsLaylonie's Yahoo group like 2 yrs ago. I've been getting emails sent to mslaylonie@yahoogroups.com

in my google email??????? So weird....

Aishwariya Rai

to mslaylonie

And it's sending them to my google account? I un-subscribed from the group a while ago and still get emails from random people sending to her email or yahoo group.

http://groups.yahoo.com/group/mslaylonie/messages

If you'll notice, it's a bunch of spam. I wish she'd shut down her yahoo group.