The problem with PR is it is always about 90 days out of date and doesn't update often enough to even worry about most days. Of course, I'm not saying that you shouldn't be curious about it, but sometimes a PR bar doesn't really give you a good perspective of the entire site. Some very low PR websites still manage to do very well for themselves.
To me, traffic is a better indicator of how well a site is doing.. some of that traffic coming from links, others from repeat visitors. Just try to build the best website that you can and if needed, look for relevant links to your most important pages.
Good luck!
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