Some people have commented on the website already. I'm not a designer, but the first thing I think of when I see it is a Word Document made by a secretary who has been told to "spice it up" a bit, so she grabbed the M$Word 97 highlight tool with default settings and applied it at random.
As I said, not a designer. And I'm sure Microsoft picked that Yellow for its highlight tool for a reason. The yellow on white is probably Good for some reason. But I find it really unappealing and it has the same kind of connotations as the rainbow-coloured WordArt in an arch shape for me (e.g. http://www.softwaretrainingsolutions.com/HDO/guests/Word/Ima...)