Hmm, erm, did you actually try any of those? On the phone? The first one is just wrong, no such URL; the second takes you to the search page (but doesn't give you a link to Reader); the last one just takes you to the page where you are supposed to connect your phone, but it doesn't treat the N900 like a phone.

I did, however, get the gmail address to work by removing the www, so thanks for that, anyway.