Jakob Nielsen says that Flash is "99% bad." I have to agree. Flash always reduces usability.
On the other hand, every time I read Jakob Nielsen, I get this feeling that he really doesn't appreciate that usability is not the most important thing on earth. Sure, usability is important (I wrote a whole book about it). But it is simply not everyone's number one priority, nor should it be. You get the feeling that if Mr Nielsen designed a singles bar, it would be well lit, clean, with giant menus printed in Arial 14 point, and you'd never have to wait to get a drink. But nobody would go there, they would all be at Coyote Ugly Saloon pouring beer on each other.
You’re reading Joel on Software, stuffed with years and years of completely raving mad articles about software development, managing software teams, designing user interfaces, running successful software companies, and rubber duckies.