I am a corporate ghostwriter and HARO is my go-to reference for (3) things.
1) I review the requests daily to source opportunities for my clients and/or extended network so that they might have an opportunity to share their expertise.
2) As a freelance writer, I monitor what contributors are requesting to source trends for future articles I may want to write
3) For pure entertainment, some of the entries pique my curiosity as a reader
Contributor: Andrea Preziotti