Thanks for your responses. I know the big guys, but was curious if anyone knows folks particularly good in Travel vertical.
Location-based is definitely a key part of the solution, but also targeted based on app usage/behavior/data.
I'm looking to provide advertising opportunities for others inside a consumer travel app whose audience are frequent travelers that value connectivity (data heavy).
Obviously I'm also tapping my professional network as well, but I've found FD Discussions to be quite valuable and this is for a side project.