tedster - 11:47 pm on Jan 4, 2011 (gmt 0)
where they got this url ? But its UNAVAILABLE
Somehow I missed this in my first reading. Yes, I do occasionally see that.
Here's my guess. I know from watching server logs that googlebot will sometimes check various URLs spontanouesly, just seeing of they exist or looking for certain types of footprints. And when googlebot does this kind of probing, sometimes those URLs may end up in the 404 report but there's no real source for the link.
I'll also hazard a guess that "parked.php" is part of some type of footprint Google hopes to identify.