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Check for several clicks within seconds or just minutes of one another.
Depending on your analysis tool, see if the suspect clicks move through the site at all, or if the landing page has an extremely high abandonment rate.
As I said, these just barely scratch the surface, but they might give you a start.
I found the data to be facinating (I'm like that) though I didn't have a lot of time to spend on it. Most of the IP's that I checked were proxy services.
I not using the data at this point, but I can imagine several scenarios where I might integrate this list into several of my web sites.
I don't know if I can post the name of it, so pm me for details.