I've used the Safari browser off and on now since it was released, and while it is fast, it is also buggy. I made the rounds of the sites I visit regularly, and it failed to render half of them correctly. When this product is finished, it will be an interesting alternative to both Firefox (my favorite) and Internet Explorer (I think version 7 was a step backwards).
In the meantime, for an interesting insight on why Apple released Safari for Windows now, see
Robert X. Cringely's column, "
The Seduction of AT&T: Why Did Apple Write Safari for Windows? Because Their Big Customer Wanted it."]
--RSN