I was definitely concerned about this before posting because some of these sites are places that I have written for, so I'm only increasing my own competition.

I was definitely concerned about this before posting because some of these sites are places that I have written for, so I'm only increasing my own competition. However, this information is all already publicly available and easy to find, so I figure there is no harm in aggregating it. Many of these sites are major publications racking up millions of page views per month. I doubt they will be affected by a small bump in traffic from my project.