AdMob, which, "serves ads for more than 15,000 mobile Web sites and applications around the world," recently released its October smartphone numbers. [pdf link] And as expected, Windows Mobile isn't exactly causing anyone to faint. The most damning chart shows Windows Mobile with a mere 4 percent of requests (as in hits) from smartphones, compared to 5 percent from WebOS, 12 percent from BlackBerries, 20 percent from Android and a whopping 55 percent from the iPhone.

Really, that's no great surprise. And we'd expect Windows Mobile's numbers to tick up a bit over the November, December and January, after the flurry of phones that hit the market upon launch of Windows Mobile 6.5.

But what's even more intriguing to us is the breakdown of Windows Mobile phones (these aren't Windows phones, as they're not running WinMO 6.5). Take a look at the chart below.

The most recent phones on there: The HTC Snap, at No. 20, with 0.9 percent share of requests. A couple versions of the Samsung Omnia come in at Nos. 6-7, and the Treo Pro's at No. 9. The HTC Touch Pro is at No. 1, and we have to remind ourselves it's not THAT old, but still ... There are some aging (as in gray hair and hearing aids) devices on that list.

And that says to us a couple of things:

1. You guys and gals love your Windows Mobile phones. So much so that you're still rocking last year's (and beyond) devices. Good for you.

2. You have some tough choices ahead of you. Windows Mobile 7 still hasn't been officially announced, and we still don't know exactly what to expect (other than much better hardware). So, to upgrade, or not to upgrade. We'll revisit that soon. In the meantime, sort things out in the comments.