Blogger has a cool tool if you are just curious about who reads your blog, but apparently the stats are a little too flattering. So when there is a spike in Pageviews, thinking how cool that is, you hop over to Traffic sources to see who is your new fan, STOP!
Don't click on the referring link.
A lot are Referral Spam sites apparently, they are NOT interested in you. Unless you are looking for a new porn link, don't click, don't look. For more information read this Blogger FAQ. Also the real deal on Blogger.
Excuse me while I go pick up my deflated ego.