IBM has a product called ScreenReader... I think it's very popular w/ blind people. But yes it's difficult to use because of all the junk that people code into their HTML -- also it helps to use ALT tags for blind people.
I'm sure there must be a blind portal -- I came up with this idea last year but never got around to working on it much. Also I'd imagine that websites designed for these new pocket pc's/cell phones will be very nice for blind people to surf... Once there's a real wireless provider that doesn't suck ass I'll move more into this area...
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...from the nectar of the Bone flows all that clicks...