The data I would be scraping are images and its associated description. I would only store and display thumbnail images. Without an image, the description would be fairly worthless. For each image/item, a link would lead directly to the original website.

One business model I am considering, and the most obvious, is a subscription based web app.

While at PyCon last month I showed a few people a prototype. One person, an employee at Google, said, "Be careful." He was alluding to potential copyright and legal issues. "But," I said, "I'm not really doing anything different than Google." He countered, "Google has lots of lawyers." Ahhhh, message heard loud and clear!

I understand, in general, copyright and fair use [0]. But, I don't want to be writing letters to the owners of the original content arguing this fact let alone wind up in court. What advice or experiences can you share that might helpful?

[0] http://en.wikipedia.org/wiki/Fair_use