Looks like just a normal blog to me with just 1 PR and not so much good alexa to refer traffic to your website comparable to Google. But don't know what the exact reason may be behind that.
I would need a lot more information than this to be able to tell you anything useful. But you should be happy you are getting traffic from somebody, don't complain, multiply it!!
My best guess is that someone came from his site originally and didn't clear the page from their browser for a while so maybe it was opening up each time they fired up, what ever, it ended just as abruptly as it began.
Hehe don't fret Craig, I wasn't complaining, just exactly as you said, wondering how to exploit it, although traffic count isn't really an important factor in my business so is over rated.
Cheers and thanks again