Sorting by favorable or unfavorable politics is much harder, since politics is so relative. It could work though - the app could quiz you about your political opinions at the first launch and then display how well/bad a company's policies fit your political ideals.
[1] http://news.ycombinator.com/item?id=3105036 [2] http://news.ycombinator.com/item?id=3104144
Or are you saying we should avoid topics that could broadly be considered political? If this is the case I don't understand why you didn't reply to OP instead of this comment (and how that meshes with pg taking a stand on SOPA in general).
Or that you think the suggested application isn't of the caliber that ideas would have been in the old days pg refers to? I have only used hn for a year or so, but have read some of the archives and this doesn't feel correct. It's an interesting idea -- perhaps a browser extension that modifies sites like amazon.com?
Please explain what you meant; I am very curious. Thanks.
The OP is suggesting features for an app, it's a totally different thing.