This stalled me also, read it four or five times because I thought I was the one being retarded.

I don't mind spelling mistakes and poor grammar, as long as I can get the point of what the author is trying to say.

However half written sentences make me think you don't really know what you're talking about and I immediately begin to subtract credibility.

And to a lesser degree: "It was his job to shill the first Macintosh, and he did a pretty good job." "Job" twice is redundant. It's not a huge deal but it's just kind of lazy and sloppy.