internetheaven - 1:18 pm on Mar 7, 2013 (gmt 0)
Just noticed that whenever I hover over an Adsense ad on my page, the &nm= part of the URl goes up by varying jumps.
I've been doing a lot of coding work on one of my sites today so I've been re-viewing some pages over and over in various browsers. I obviously don't click my own ads, but I noticed that the advertiser's URl was changing as I passed over it.
An image banner seems to go up in +1s e.g. &nm=1, &nm=2, &nm=3 etc.
But text banners go up in strange jumps e.g. &nm=2, &nm=7, &nm=9, &nm=16 etc.
What is nm for? If I'm passing over my ads several times whilst checking things, does Google mark it as not-relevant and drops the ad? If I have an ad in a place where people are going to cross their mouse over it on the way to another part of the page, is that going to affect what ads are shown?