They CAN and DO.. If, and I stress "if" the text is the same color as the background, or WHITE. However, most make their hidden text just one notch above the color, so instead of white FFFFFF, it is like FCFCFD or something like that.
Recently I reported a site to Google that had 40+ pages of this stuff. I'm going to track it and see what happens.
The site that started this thread was amazing- I have never seen a PR6 with hidden text?? It seems like the ones I had seen were at most PR3 or 4 and usually didn't look as nice as that one does in the visible areas.
I never reported anybody to Google or any other SE, nor are they competitors of mine. Still, I am very motivated and might send in my first report ever, that's disgusting.
Don't be jealous guys They have great content (a lot of it) but you've to highlight it to read (different perspective). I think they don't want everybody reading their valuable content
Ok, this has to be some kind of record: Hidden Words: 75,933 HIdden Characters: 437,808 URL: www. smallloads .com/about.html