This article is in-progress.

I am compiling a list of notable sites (i.e., sites with consistent traffic, traffic growth, or sites that people talk about elsewhere) that are focused on aggregating content from other sites, primarily through RSS feeds.

• addictomatic.com
• alltop.com
• esciencenews.com
• headlinesfeed.com
• hypem.com
• originalsignal.com
• popurls.com
• protopage.com

If you know others, please submit them throught the contact form or in the comments below. I will review each submission and add it to the list if appropriate.