I agree with Ed about you've got to hit your target market .... I know there's a good chunk of people on the forum that want a client for the non-Windows operating systems. But it's a $$$ game ... if you aren't going to make enough to justify the dev resources to build the client ... then it doesn't make business sense.
By the way ... check out http://www.lindows.com
They show Notes running on their Linux OS.....
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