Engadget always has a source link at the bottom of the article. They don’t link to anything but themselves in the article text for SEO reasons. Also note that the word “Source” at the bottom of the article is not text but an image – also for SEO reasons. (I don’t, however, know what that’s supposed to help.)
This is a truly disgusting practice. The good thing about it is that once you know what’s going on, it’s relatively unproblematic. Whenever someone directs me to Engadget I know where I have to click. (In a funny twist, once you know where it is, finding the source is actually easier than when it is hiding in the article text.)