Getting Hits from a Strange Site... any ideas?

Hi all,

For the past two days my website has been getting hits from the following address:

peakhourtraffic.com/auto4credits.php

I'm not sure what peakhourtraffic is, but it looks like something that pays people to click links? Nearly all of the hits have been bounces. In fact, there's a few IP's that have been 'logged' into my site for 8+ hours, and it looks like someone's clicking on my main page every hour or two.

Any ideas? As long as these aren't PPC (and don't have to do with my AdWords campaign) I guess they're harmless. I just don't understand it.

Thanks in advance.

 

even for me i got a referred site when i checked in sitemeter....i tried to click and see where the link goes...but when i clicked i got a warning message from google saying the link is like a virus code

 

I think it's autosurf traffic exchange

 

I guarantee its proxy or autosurf software. Ignore it or block it.

 

Cool, thanks!

(What type of advantage does auto-surf software get from this? Just indexing site content?)