Recently I checked my website stats and saw I had a few hits from “127.0.0.1:4664” and wondered to myself, what the heck is that? Am I looking at my own site from a localhost? Why am I getting backlinks from my local computer to my site.
After searching around a bit I found out that port 4664 is used by Google Desktop Search and when I typed in certain queries into Google it also returned items from my desktop search.
Now you know!