Say you have a niche where there are approximately 30 great sites, and all provide an RSS feed on their website.
You then publish a page on your own site where you display the latest headlines from the RSS feed of all 30 websites, calling it "latest _____ niche news". The headlines link back to the original site.
Do you consider this OK?
I see thousands of websites do this, or similar things.
But I highly doubt they've all asked or researched each individual site to see if it is OK to include that site's RSS feed on their own site like this.
What if 7 of the sites have in their terms of service something like "no content from our site can be displayed on another website"?
I would think that just because they have an RSS feed on their website it doesn't mean they allow you to display this feed in parts or whole all over the web?