An Alert

Heads up fellow bloggers~tonight while going through my reader I came across a blog name I didn't recognize, one I've never joined or followed.  The posts are all ads for products.  As I researched it, I found that the name on the blog address was  a blog I used to follow but she hasn't been posting this year.  I'm not sure how, but when I checked it out of Goggle +, I found it is a guy and I've never done anything to get him in my reading list.  I've also had problems this last year with deleting blogs that are now longer active.  This blog is called Montana; and of course there is no reader list on the side panel to delete my name off of.  If anyone has any advice or ways to delete a blog, so they won't keep popping up with ads, please let me know.  Thanks.