These appear to be related to the ads inserted into WP: I suspect that, over time, the names and quantity will vary as different ads are pushed here.
You might want to add the Firefox extensions AdblockPlus and NoScript to prevent them (and other assorted distracting noise) from being loaded: if I see any ads on any site these days it's something of a novelty...
In Firefox, go to Tools|Add-ons, then select "Get Add-ons", and type in (or copy/paste) AdblockPlus into the "Search all add-ons" box.
This should display a list of matches, where you'll see AdblockPlus and next to it, an "Install" button. Click that (Firefox will probably request a restart after it's been installed) and then go back in and repeat it, but searching for NoScript instead.
(the menu names may vary a little in the Windows version of Firefox but you should be able to find it Ok)
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Giraffe: a ruminant with a view.