Pre-Grant Publication Number: 20100332337
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Facilitator's Comment 
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First, it is of an extremely high expectation for myriads of comments on news websites/blogs to be read. And that's why YouTube developed the system of highlighting the comments that gained the most attention and "likes" on top of the web page.
Second, even though the fingerprinting system may appear exclusive at first, but it is just addition of fingerprinting system to an already existent one-click payment system. Additionally, generally speaking, the mergence of two common components can be quite exclusively innovative, but this mergence of abovementioned two components does not seem so appealing.
Amazon already has a one-click ordering system.
This is not universal but the idea of one-click is already in use.
We appreciate your comment that it is too obvious, but in order to provide the examiner with more precise information, could you please provide a more specific comment? Or even site some possible examples that would suggest that a person having ordinary skill in the art would find this to be obvious? It would be so helpful! Thanks
However, going back a few comments, to what MoonSoo Choi brought up. The security of an application like this is extremely important. Without proper security in protecting users' payment information, the system as a whole is not feasible.
Sam, I agree with your comment but I would like to discuss a different topic. On the claims or throughout the application, I do not see a real valuable use for the users, customers, or visitor. While it is true that paid comments will appear at the top of the comments more often with a particular distinctive appearance style on the page, how would this guarantee that the reader gets to see some of the most constructive, educated, related, or appropriate comments?
This invention is definitely not unique and non-obvious.
Besides that, there is the issue of security. If a payer uses his/her own computer to make a payment through the TPA, then this system may work. However, if a payer uses a public computer/device or a computer/device belonging to someone else, how does the TPA distinguish between payers? It would have helped if the patent applicant elaborated more on this.
Also, the application of this technology has a few issues: For example, if the reader can pay a fee to make a comment stand out, then this distinction would be undermined if many readers did this. Secondly, this system of comment manipulation risks speech democracy -- basically, whoever pays has the loudest voice
http://www.google.com/patents?hl=en&lr=&vid=USPATAPP11610102&id=ZQ2rAAAAEBAJ&oi=fnd&dq=Online+purchase+Sale+transaction+Fingerprint+device&printsec=abstract#v=onepage&q=Online%20purchase%20Sale%20transaction%20Fingerprint%20device&f=false
The patent describes solutions for a physical store but under the "Description of the Related Art" section, it describes that it suggests that such technology has been applied to online stores.