click fraud on searchfeed?

I started doing pay per click with Searchfeed a few days ago and I am noticing that each IP address seems to be clicking on my ads as many as 11 times each within a few minutes. I think it could be fraudulent clicks of some kind.
For example, one IP address clicked on my ads 11 times in 5 minutes. Another clicked 4 times in 7 seconds, etc. Another clicked 6 times in 9 minutes. This seems to be pretty common and very rarely am I getting just one or even two clicks from one IP address.
Can anyone help explain this? Thank you.

Original post by Scotia King