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Are there any copyright issues?

Yes, interesting point. I skimmed through this: http://www.writersweekly.com/print/the_latest_from_angelahoy...

Maybe allow people to re-submit their own reviews to your site? They own the original copyright. In the meantime, you could quote an excerpt and link to the original.

Related: TrustYou is doing automated semantic analysis on travel reviews across multiple sites, then syndicating their assessment back to the vendors being reviewed, http://www.trustyou.com/press/travelers-now-read-hotel-revie...

Ya, it seems analogous to TrustYou. In doing further research, it looks like Amazon is granted a right to use the copy as they wish, which could be to let affiliates, resellers, and any other people market the product, IMHO. And isn't driving users to a website to laugh at a review a form of marketing?

Yes, your site could drive traffic to the review sites. Have you seen tvtropes?

Amazon used to have an API for reviews, but it was discontinued, http://mkcohen.com/amazon-pulls-the-plug-on-review-data

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