What is atdmt.com?

Here’s how I deal with sh|t like that and more.
Almost without exception, when I click on any link of any sort in any page, I always RIGHT-click on the link, then choose to open the link in a new tab. When I’m good and done looking at that, I just close that tab.

If I feel fairly sure I’m done reading the initial page, however (meaning I don’t think I’m going back to it), then I’ll just click directly. I often do this, for example, when reading on-line news articles.

Of course, if I do a lot of clicking on links, I might sometimes end up with a whole bunch of tabs open. I try to keep a low limit on this, just so I can keep track in my head of what-all I’ve got open. So, for example, when I read news or SDMB, I’ll often make a point of finishing one page to my satisfaction so I can close it.

But wait! There’s more! I also try to take advantage of some browser tricks to avoid excess junk. I’ve mentioned many times that I keep JavaScript disabled when I’m not actually needing it. This alone cuts down substantially on junk! Also, my browser (Firefox 3.something) has an option to black-list images: Whenever an image appears on a page, I RIGHT-click on the image. One of the options is to block all future images from the site where that image came from. If it’s an advertising site, that’s what I do. So I’ve built up a black-list of those, and I never see images from those sites. After just a few weeks of doing this, it really reduces that kind of junk a lot.

NOW: If only there was a way to build a similar black-list of third-party sites other than images! Basically, HTML pages contain links to other pages that display in little boxes on the parent page, and I want to block all those from advertising sites, and build a black-list, just like with I can do with images. Short of installing browser ad-ons, does anyone know of a way to do this? (Maybe I’ll go ahead and install ad-ons if necessary, but I’d like a way to do it directly in the browser.)

ETA: TL;DR version: Does anybody know a way to make the browser BLOCK ALL loads from atdmt.com or any other sites I don’t want to hear from? I want to build a black-list of those.