It is a spammers trick to get hits on their own sites via your blogger stats. I have been inundated with these of late!
If you check your Google Analytics account, instead of your blogger dashboard stats, you will probably find these dubious sites have been pre-filtered out from the data. At least this is the case with my stats. On the blogger stats on my dash board I had 743 visits from Russia last month, whereas on the analytics stats I had just 44... so they must be identifying these spammers, even if they are not actually stopping them. I'll update this if I find out any more about what blogger is doing about this.
I'm really keen to hear if any of you have had issues too?
Here's some further reading on the subject of strange referral sites -
Referer Spam Is Needlessly Alarming Blog Owners
Killing Referral Spam
x Hilary :) .